Cargo format

rustfmt.toml

@@ -0,0 +1 @@
+tab_spaces = 2

src/bin.rs

@@ -1,13 +1,22 @@
-use std::process::exit;
 use std::env;
+use std::process::exit;
 
 pub fn schematics_main(run: &dyn Fn(bool) -> Result<(), ()>) {
   let args: Vec<String> = env::args().collect();
   let dry_run = match args.len() {
     1 => false,
-    2 => if args[1] == "--dry-run" { true } else { panic!() },
-    _ => panic!()
+    2 => {
+      if args[1] == "--dry-run" {
+        true
+      } else {
+        panic!()
+      }
+    }
+    _ => panic!(),
   };
 
-  exit(match run(dry_run) { Ok(_) => 0, Err(_) => 1 });
+  exit(match run(dry_run) {
+    Ok(_) => 0,
+    Err(_) => 1,
+  });
 }

src/build.rs

@@ -7,7 +7,13 @@ use std::path::{Path, PathBuf};
 fn get_const_name<P: Clone + Into<PathBuf>>(p: &P) -> String {
   let mut file_name_without_extension = p.clone().into();
   file_name_without_extension.set_extension("");
-  String::from(file_name_without_extension.file_name().unwrap().to_string_lossy()).to_uppercase()
+  String::from(
+    file_name_without_extension
+      .file_name()
+      .unwrap()
+      .to_string_lossy(),
+  )
+  .to_uppercase()
 }
 
 pub fn create_static_output_files(source_dir: &str) {
@@ -17,8 +23,20 @@ pub fn create_static_output_files(source_dir: &str) {
   for maybe_dir_entry in read_dir(source_dir).unwrap() {
     let file_path = maybe_dir_entry.unwrap().path();
     let mut buffer = String::new();
-    File::open(file_path.clone()).unwrap().read_to_string(&mut buffer).unwrap();
+    File::open(file_path.clone())
+      .unwrap()
+      .read_to_string(&mut buffer)
+      .unwrap();
     let fence = buffer.chars().filter(|c| *c == '#').collect::<String>() + "#";
-    f.write_all(format!("pub const {}: &str = r{1}\"{2}\"{1};\n", get_const_name(&file_path), fence, buffer).as_bytes()).unwrap();
+    f.write_all(
+      format!(
+        "pub const {}: &str = r{1}\"{2}\"{1};\n",
+        get_const_name(&file_path),
+        fence,
+        buffer
+      )
+      .as_bytes(),
+    )
+    .unwrap();
   }
 }

src/command_runner.rs

@@ -5,22 +5,35 @@ use std::process::Command;
 use std::process::Output;
 
 pub trait CommandRunner {
-  fn run_with_args<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> IoResult<Output>;
-  fn get_output<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> Result<Vec<u8>, Box<dyn Error>> {
+  fn run_with_args<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S])
+    -> IoResult<Output>;
+  fn get_output<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> Result<Vec<u8>, Box<dyn Error>> {
     let output = try!(self.run_with_args(program, args));
     if !output.status.success() {
       return Err(try!(String::from_utf8(output.stderr)).into());
     }
     Ok(output.stdout)
   }
-  fn get_stderr<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> Result<Vec<u8>, Box<dyn Error>> {
+  fn get_stderr<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> Result<Vec<u8>, Box<dyn Error>> {
     let output = try!(self.run_with_args(program, args));
     if !output.status.success() {
       return Err(try!(String::from_utf8(output.stderr)).into());
     }
     Ok(output.stderr)
   }
-  fn run_successfully<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> Result<(), Box<dyn Error>> {
+  fn run_successfully<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> Result<(), Box<dyn Error>> {
     let output = try!(self.run_with_args(program, args));
     if output.status.success() {
       Ok(())
@@ -34,7 +47,11 @@ pub trait CommandRunner {
 pub struct StdCommandRunner;
 
 impl CommandRunner for StdCommandRunner {
-  fn run_with_args<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> IoResult<Output> {
+  fn run_with_args<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> IoResult<Output> {
     // FIXME: logger
     //println!("{} {:?}", program, args);
     let res = Command::new(program).args(args).output();
@@ -44,28 +61,43 @@ impl CommandRunner for StdCommandRunner {
 }
 
 #[derive(Debug)]
-pub struct SetuidCommandRunner<'a, C> where C: 'a + CommandRunner {
+pub struct SetuidCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
   command_runner: &'a C,
-  user_name: &'a str
+  user_name: &'a str,
 }
 
-impl<'a, C> SetuidCommandRunner<'a, C> where C: 'a + CommandRunner {
+impl<'a, C> SetuidCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
   pub fn new(user_name: &'a str, command_runner: &'a C) -> SetuidCommandRunner<'a, C> {
-    SetuidCommandRunner { command_runner, user_name }
+    SetuidCommandRunner {
+      command_runner,
+      user_name,
+    }
   }
 }
 
-use std::os::unix::process::CommandExt;
 use std::env;
+use std::os::unix::process::CommandExt;
 use users::get_user_by_name;
 
-struct TempSetEnv<'a> { name: &'a str, old_value: Option<String> }
+struct TempSetEnv<'a> {
+  name: &'a str,
+  old_value: Option<String>,
+}
 
 impl<'a> TempSetEnv<'a> {
   fn new(name: &'a str, new_value: String) -> TempSetEnv<'a> {
     let old_value = env::var(name);
     env::set_var(name, new_value);
-    TempSetEnv { name, old_value: old_value.ok() }
+    TempSetEnv {
+      name,
+      old_value: old_value.ok(),
+    }
   }
 }
 
@@ -73,14 +105,23 @@ impl<'a> Drop for TempSetEnv<'a> {
   fn drop(&mut self) {
     match self.old_value {
       Some(ref val) => env::set_var(self.name, val),
-      None => env::remove_var(self.name)
+      None => env::remove_var(self.name),
     }
   }
 }
 
-impl<'a, C> CommandRunner for SetuidCommandRunner<'a, C> where C: 'a + CommandRunner {
-  fn run_with_args<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> IoResult<Output> {
-    let uid = get_user_by_name(self.user_name).expect("User does not exist").uid();
+impl<'a, C> CommandRunner for SetuidCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
+  fn run_with_args<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> IoResult<Output> {
+    let uid = get_user_by_name(self.user_name)
+      .expect("User does not exist")
+      .uid();
     let set_home = TempSetEnv::new("HOME", format!("/home/{}", self.user_name));
     let set_dbus = TempSetEnv::new("XDG_RUNTIME_DIR", format!("/run/user/{}", uid));
     //println!("{} {:?}", program, args);
@@ -91,21 +132,37 @@ impl<'a, C> CommandRunner for SetuidCommandRunner<'a, C> where C: 'a + CommandRu
 }
 
 #[derive(Debug)]
-pub struct SuCommandRunner<'a, C> where C: 'a + CommandRunner {
+pub struct SuCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
   command_runner: &'a C,
-  user_name: &'a str
+  user_name: &'a str,
 }
 
-impl<'a, C> SuCommandRunner<'a, C> where C: 'a + CommandRunner {
+impl<'a, C> SuCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
   pub fn new(user_name: &'a str, command_runner: &'a C) -> SuCommandRunner<'a, C> {
-    SuCommandRunner { command_runner, user_name }
+    SuCommandRunner {
+      command_runner,
+      user_name,
+    }
   }
 }
 
 // Su doesn't set XDG_RUNTIME_DIR
 // https://github.com/systemd/systemd/blob/master/src/login/pam_systemd.c#L439
-impl<'a, C> CommandRunner for SuCommandRunner<'a, C> where C: 'a + CommandRunner {
-  fn run_with_args<S: AsRef<OsStr> + ?Sized>(&self, program: &str, args: &[&S]) -> IoResult<Output> {
+impl<'a, C> CommandRunner for SuCommandRunner<'a, C>
+where
+  C: 'a + CommandRunner,
+{
+  fn run_with_args<S: AsRef<OsStr> + ?Sized>(
+    &self,
+    program: &str,
+    args: &[&S],
+  ) -> IoResult<Output> {
     let raw_new_args = [self.user_name, "-s", "/usr/bin/env", "--", program];
     let mut new_args: Vec<&OsStr> = raw_new_args.iter().map(|s| s.as_ref()).collect();
     let old_args: Vec<&OsStr> = args.iter().map(|s| s.as_ref()).collect();
@@ -115,5 +172,4 @@ impl<'a, C> CommandRunner for SuCommandRunner<'a, C> where C: 'a + CommandRunner
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/factory.rs

@@ -5,29 +5,35 @@ use loggers::StdErrLogger;
 use repository::SymbolRepository;
 use resources::Resource;
 use schema::{NonRepeatingSymbolRunner, ReportingSymbolRunner, RequirementsResolvingSymbolRunner};
-use symbols::{Symbol, SymbolRunner};
 use symbols::dir::Dir;
 use symbols::list::List;
 use symbols::owner::Owner;
 use symbols::systemd::user_session::SystemdUserSession;
 use symbols::tls::{TlsCsr, TlsKey};
-use symbols::user::{User, UserAdder};
 use symbols::user::SystemUserAdder;
+use symbols::user::{User, UserAdder};
+use symbols::{Symbol, SymbolRunner};
 
 #[derive(Default)]
-pub struct Factory {
-}
+pub struct Factory {}
 
 impl Factory {
   pub fn new() -> Self {
     Default::default()
   }
 
-  pub fn get_repo<'a, CR: CommandRunner>(&self, command_runner: &'a CR) -> DefaultSymbolRepository<'a, SystemUserAdder<'a, CR>, CR> {
+  pub fn get_repo<'a, CR: CommandRunner>(
+    &self,
+    command_runner: &'a CR,
+  ) -> DefaultSymbolRepository<'a, SystemUserAdder<'a, CR>, CR> {
     DefaultSymbolRepository::new(command_runner)
   }
 
-  pub fn get_symbol_runner<'a, RUNNER: SymbolRunner, REPO: SymbolRepository<'a>>(&self, symbol_runner: &'a RUNNER, repo: &'a REPO) -> Box<dyn 'a + SymbolRunner> {
+  pub fn get_symbol_runner<'a, RUNNER: SymbolRunner, REPO: SymbolRepository<'a>>(
+    &self,
+    symbol_runner: &'a RUNNER,
+    repo: &'a REPO,
+  ) -> Box<dyn 'a + SymbolRunner> {
     let runner1 = ReportingSymbolRunner::new(symbol_runner, StdErrLogger);
     let runner2 = NonRepeatingSymbolRunner::new(runner1);
     Box::new(RequirementsResolvingSymbolRunner::new(runner2, repo))
@@ -42,7 +48,7 @@ pub struct DefaultSymbolRepository<'a, A: 'a + UserAdder, C: 'a + CommandRunner>
   home_config: Regex,
   csr: Regex,
   private_key: Regex,
-  systemd_linger: Regex
+  systemd_linger: Regex,
 }
 
 impl<'a, C: 'a + CommandRunner> DefaultSymbolRepository<'a, SystemUserAdder<'a, C>, C> {
@@ -54,54 +60,64 @@ impl<'a, C: 'a + CommandRunner> DefaultSymbolRepository<'a, SystemUserAdder<'a,
       home_config: Regex::new("^/home/([^/]+)/.config(?:/|$)").unwrap(),
       csr: Regex::new("^/etc/ssl/local_certs/([^/]+).csr$").unwrap(),
       private_key: Regex::new("^/etc/ssl/private/([^/]+).key$").unwrap(),
-      systemd_linger: Regex::new("^/var/lib/systemd/linger/([^/]+)$").unwrap()
+      systemd_linger: Regex::new("^/var/lib/systemd/linger/([^/]+)$").unwrap(),
     }
   }
 }
 
-impl<'a, C: CommandRunner> SymbolRepository<'a> for DefaultSymbolRepository<'a, SystemUserAdder<'a, C>, C> {
+impl<'a, C: CommandRunner> SymbolRepository<'a>
+  for DefaultSymbolRepository<'a, SystemUserAdder<'a, C>, C>
+{
   fn get_symbol(&'a self, resource: &Resource) -> Option<Box<dyn Symbol + 'a>> {
     match resource.get_type() {
       "user" => Some(Box::new(User::new(
         resource.get_value().to_string().into(),
         self.command_runner,
-          &self.user_adder
+        &self.user_adder,
       ))),
       "dir" => {
         let value = resource.get_value();
-        Some(
-          if let Some(matches) = self.home_config.captures(value) {
+        Some(if let Some(matches) = self.home_config.captures(value) {
           Box::new(List::new(vec![
             Box::new(Dir::new(value.to_string())),
-              Box::new(Owner::new(value.to_string(), matches[1].to_string().into(), self.command_runner))
+            Box::new(Owner::new(
+              value.to_string(),
+              matches[1].to_string().into(),
+              self.command_runner,
+            )),
           ])) as Box<dyn Symbol>
         } else if let Some(matches) = self.home.captures(value) {
-            Box::new(
-              User::new(matches[1].to_string().into(), self.command_runner, &self.user_adder)
-            ) as Box<dyn Symbol>
-          } else { Box::new(Dir::new(value.to_string())) as Box<dyn Symbol> }
-        )
-      },
+          Box::new(User::new(
+            matches[1].to_string().into(),
+            self.command_runner,
+            &self.user_adder,
+          )) as Box<dyn Symbol>
+        } else {
+          Box::new(Dir::new(value.to_string())) as Box<dyn Symbol>
+        })
+      }
       "file" => {
         let value = resource.get_value();
         if let Some(matches) = self.csr.captures(value) {
           Some(Box::new(TlsCsr::new(
             matches[1].to_string().into(),
-            self.command_runner
+            self.command_runner,
           )) as Box<dyn Symbol>)
         } else if let Some(matches) = self.private_key.captures(value) {
           Some(Box::new(TlsKey::new(
             matches[1].to_string().into(),
-            self.command_runner
+            self.command_runner,
           )) as Box<dyn Symbol>)
         } else if let Some(matches) = self.systemd_linger.captures(value) {
           Some(Box::new(SystemdUserSession::new(
             matches[1].to_string().into(),
-            self.command_runner
+            self.command_runner,
           )) as Box<dyn Symbol>)
-        } else { None }
-      },
-      _ => None
+        } else {
+          None
+        }
+      }
+      _ => None,
     }
   }
 }

src/lib.rs

@@ -1,22 +1,21 @@
 // rustfmt
 
-#![deny(trivial_numeric_casts, unsafe_code,
-unstable_features, unused_extern_crates,
-unused_import_braces, unused_qualifications,
+#![deny(
+  trivial_numeric_casts,
+  unsafe_code,
+  unstable_features,
+  unused_extern_crates,
+  unused_import_braces,
+  unused_qualifications,
   variant_size_differences
 )]
-
-#![warn(
-unused_results
-)]
-
+#![warn(unused_results)]
 /*
 #![warn(missing_docs, trivial_casts,
 missing_copy_implementations,
 missing_debug_implementations
 )]
 */
-
 #![allow(box_pointers)]
 
 extern crate regex;
@@ -27,8 +26,8 @@ pub mod build;
 pub mod command_runner;
 pub mod factory;
 pub mod loggers;
-pub mod symbols;
-pub mod schema;
 pub mod repository;
 pub mod resources;
+pub mod schema;
 pub mod storage;
+pub mod symbols;

src/loggers.rs

@@ -18,7 +18,7 @@ impl Logger for StdErrLogger {
 }
 
 pub struct FilteringLogger<'a> {
-  logger: &'a mut dyn Logger
+  logger: &'a mut dyn Logger,
 }
 
 impl<'a> FilteringLogger<'a> {
@@ -28,14 +28,11 @@ impl<'a> FilteringLogger<'a> {
 }
 
 impl<'a> Logger for FilteringLogger<'a> {
-  fn debug(&mut self, _str: &str) {
-    return
-  }
+  fn debug(&mut self, _str: &str) {}
   fn write(&mut self, str: &str) {
     self.logger.write(str)
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/repository.rs

@@ -1,20 +1,23 @@
 use std::collections::HashMap;
 
-use symbols::Symbol;
 use resources::Resource;
+use symbols::Symbol;
 
 pub trait SymbolRepository<'a> {
   fn get_symbol(&'a self, resource: &Resource) -> Option<Box<dyn Symbol + 'a>>;
 }
 
-impl<'a, C> SymbolRepository<'a> for C where C: Fn(&Resource) -> Option<Box<dyn Symbol + 'a>> {
+impl<'a, C> SymbolRepository<'a> for C
+where
+  C: Fn(&Resource) -> Option<Box<dyn Symbol + 'a>>,
+{
   fn get_symbol(&'a self, resource: &Resource) -> Option<Box<dyn Symbol + 'a>> {
     self(resource)
   }
 }
 
 pub struct DispatchingSymbolRepository<'a> {
-  repositories: HashMap<&'a str, Box<dyn SymbolRepository<'a> + 'a>>
+  repositories: HashMap<&'a str, Box<dyn SymbolRepository<'a> + 'a>>,
 }
 
 impl<'a> DispatchingSymbolRepository<'a> {
@@ -25,6 +28,9 @@ impl<'a> DispatchingSymbolRepository<'a> {
 
 impl<'a> SymbolRepository<'a> for DispatchingSymbolRepository<'a> {
   fn get_symbol(&'a self, resource: &Resource) -> Option<Box<dyn Symbol + 'a>> {
-    self.repositories.get(resource.get_type()).and_then(|repo| repo.get_symbol(resource))
+    self
+      .repositories
+      .get(resource.get_type())
+      .and_then(|repo| repo.get_symbol(resource))
   }
 }

src/schema.rs

@@ -9,20 +9,20 @@ use symbols::{Symbol, SymbolRunner};
 #[derive(Debug)]
 pub enum SymbolRunError {
   Symbol(Box<dyn Error>),
-  ExecuteDidNotReach(())
+  ExecuteDidNotReach(()),
 }
 
 impl Error for SymbolRunError {
   fn description(&self) -> &str {
     match self {
       SymbolRunError::Symbol(_) => "Symbol execution error",
-      SymbolRunError::ExecuteDidNotReach(_) => "Target not reached after executing symbol"
+      SymbolRunError::ExecuteDidNotReach(_) => "Target not reached after executing symbol",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
       SymbolRunError::Symbol(ref e) => Some(&**e),
-      SymbolRunError::ExecuteDidNotReach(_) => None
+      SymbolRunError::ExecuteDidNotReach(_) => None,
     }
   }
 }
@@ -31,24 +31,25 @@ impl fmt::Display for SymbolRunError {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     match self {
       SymbolRunError::Symbol(ref e) => write!(f, "{}", e),
-      SymbolRunError::ExecuteDidNotReach(_) => write!(f, "{}", self.description())
+      SymbolRunError::ExecuteDidNotReach(_) => write!(f, "{}", self.description()),
     }
   }
 }
 
 pub struct InitializingSymbolRunner<L: Logger> {
-  logger: RefCell<L>
+  logger: RefCell<L>,
 }
 
 impl<L: Logger> InitializingSymbolRunner<L> {
   pub fn new(logger: L) -> Self {
-    Self { logger: RefCell::new(logger) }
+    Self {
+      logger: RefCell::new(logger),
+    }
   }
 }
 
 impl<L: Logger> SymbolRunner for InitializingSymbolRunner<L> {
-  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>>
-  {
+  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>> {
     let mut logger = self.logger.borrow_mut();
     let target_reached = try!(symbol.target_reached());
     if target_reached {
@@ -58,7 +59,13 @@ impl<L: Logger> SymbolRunner for InitializingSymbolRunner<L> {
       logger.write(format!("Executing {}", symbol).as_str());
       try!(symbol.execute());
       let target_reached = try!(symbol.target_reached());
-      logger.debug(format!("Symbol reports target_reached: {:?} (should be true)", target_reached).as_str());
+      logger.debug(
+        format!(
+          "Symbol reports target_reached: {:?} (should be true)",
+          target_reached
+        )
+        .as_str(),
+      );
       if !target_reached {
         return Err(Box::new(SymbolRunError::ExecuteDidNotReach(())));
       }
@@ -68,18 +75,19 @@ impl<L: Logger> SymbolRunner for InitializingSymbolRunner<L> {
 }
 
 pub struct DrySymbolRunner<L: Logger> {
-  logger: RefCell<L>
+  logger: RefCell<L>,
 }
 
 impl<L: Logger> DrySymbolRunner<L> {
   pub fn new(logger: L) -> Self {
-    Self { logger: RefCell::new(logger) }
+    Self {
+      logger: RefCell::new(logger),
+    }
   }
 }
 
 impl<L: Logger> SymbolRunner for DrySymbolRunner<L> {
-  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>>
-  {
+  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>> {
     let mut logger = self.logger.borrow_mut();
     let target_reached = try!(symbol.target_reached());
     logger.debug(format!("Symbol reports target_reached: {:?}", target_reached).as_str());
@@ -92,22 +100,29 @@ impl<L: Logger> SymbolRunner for DrySymbolRunner<L> {
 
 pub struct ReportingSymbolRunner<'a, R: 'a + SymbolRunner, L: Logger>(&'a R, RefCell<L>);
 
-impl<'a, R, L> ReportingSymbolRunner<'a, R, L> where R: SymbolRunner, L: Logger {
+impl<'a, R, L> ReportingSymbolRunner<'a, R, L>
+where
+  R: SymbolRunner,
+  L: Logger,
+{
   pub fn new(symbol_runner: &'a R, logger: L) -> Self {
     ReportingSymbolRunner(symbol_runner, RefCell::new(logger))
   }
 }
 
-impl<'a, R, L> SymbolRunner for ReportingSymbolRunner<'a, R, L> where R: SymbolRunner, L: Logger {
-  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>>
+impl<'a, R, L> SymbolRunner for ReportingSymbolRunner<'a, R, L>
+where
+  R: SymbolRunner,
+  L: Logger,
 {
+  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>> {
     let mut logger = self.1.borrow_mut();
     logger.debug(format!("Running symbol {}", symbol).as_str());
     let res = self.0.run_symbol(symbol);
     match res {
       Err(ref e) => {
         logger.write(format!("Failed on {} with {}, aborting.", symbol, e).as_str());
-      },
+      }
       Ok(_) => {
         logger.debug(format!("Successfully finished {}", symbol).as_str());
       }
@@ -116,23 +131,28 @@ impl<'a, R, L> SymbolRunner for ReportingSymbolRunner<'a, R, L> where R: SymbolR
   }
 }
 
-use std::collections::HashSet;
 use resources::Resource;
+use std::collections::HashSet;
 
 pub struct NonRepeatingSymbolRunner<R: SymbolRunner> {
   upstream: R,
-  done: RefCell<HashSet<Resource>>
+  done: RefCell<HashSet<Resource>>,
 }
 
-impl<R> NonRepeatingSymbolRunner<R> where R: SymbolRunner {
+impl<R> NonRepeatingSymbolRunner<R>
+where
+  R: SymbolRunner,
+{
   pub fn new(symbol_runner: R) -> Self {
-    NonRepeatingSymbolRunner{ upstream: symbol_runner, done: RefCell::new(HashSet::new()) }
+    NonRepeatingSymbolRunner {
+      upstream: symbol_runner,
+      done: RefCell::new(HashSet::new()),
+    }
   }
 }
 
 impl<R: SymbolRunner> SymbolRunner for NonRepeatingSymbolRunner<R> {
-  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>>
-  {
+  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>> {
     if let Some(resources) = symbol.provides() {
       let mut done = self.done.borrow_mut();
       let mut has_to_run = false;
@@ -151,17 +171,29 @@ impl<R: SymbolRunner> SymbolRunner for NonRepeatingSymbolRunner<R> {
 }
 use std::marker::PhantomData;
 
-pub struct RequirementsResolvingSymbolRunner<'a, 's, R: 'a + SymbolRunner, G: 'a + SymbolRepository<'s>>(R, &'a G, PhantomData<Box<dyn Symbol + 's>>);
-
-impl<'s, 'a: 's, R, G> RequirementsResolvingSymbolRunner<'a, 's, R, G> where R: SymbolRunner, G: SymbolRepository<'s> {
+pub struct RequirementsResolvingSymbolRunner<
+  'a,
+  's,
+  R: 'a + SymbolRunner,
+  G: 'a + SymbolRepository<'s>,
+>(R, &'a G, PhantomData<Box<dyn Symbol + 's>>);
+
+impl<'s, 'a: 's, R, G> RequirementsResolvingSymbolRunner<'a, 's, R, G>
+where
+  R: SymbolRunner,
+  G: SymbolRepository<'s>,
+{
   pub fn new(symbol_runner: R, symbol_repo: &'a G) -> Self {
     RequirementsResolvingSymbolRunner(symbol_runner, symbol_repo, PhantomData)
   }
 }
 
-impl<'s, 'a: 's, R, G> SymbolRunner for RequirementsResolvingSymbolRunner<'a, 's, R, G> where R: SymbolRunner, G: SymbolRepository<'s> {
-  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>>
+impl<'s, 'a: 's, R, G> SymbolRunner for RequirementsResolvingSymbolRunner<'a, 's, R, G>
+where
+  R: SymbolRunner,
+  G: SymbolRepository<'s>,
 {
+  fn run_symbol(&self, symbol: &dyn Symbol) -> Result<(), Box<dyn Error>> {
     for resource in symbol.get_prerequisites() {
       if let Some(dep) = self.1.get_symbol(&resource) {
         try!(dep.as_action(self).run());
@@ -180,13 +212,13 @@ mod test {
   use std::fmt;
 
   use loggers::Logger;
-  use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction};
-  use schema::SymbolRunner;
   use schema::InitializingSymbolRunner;
+  use schema::SymbolRunner;
+  use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction};
 
   #[derive(Debug, PartialEq, Clone)]
   enum DummySymbolError {
-    Error(())
+    Error(()),
   }
 
   impl Error for DummySymbolError {
@@ -203,7 +235,7 @@ mod test {
 
   struct DummySymbol<'a> {
     _execute: &'a dyn Fn() -> Result<(), Box<dyn Error>>,
-    _target_reached: &'a dyn Fn() -> Result<bool, Box<dyn Error>>
+    _target_reached: &'a dyn Fn() -> Result<bool, Box<dyn Error>>,
   }
 
   impl<'b> Symbol for DummySymbol<'b> {
@@ -218,7 +250,10 @@ mod test {
       Box::new(SymbolAction::new(runner, self))
     }
 
-    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+    where
+      Self: 'a,
+    {
       Box::new(OwnedSymbolAction::new(runner, *self))
     }
   }
@@ -230,13 +265,19 @@ mod test {
   }
 
   impl<'a> DummySymbol<'a> {
-    fn new(target_reached: &'a dyn Fn() -> Result<bool, Box<dyn Error>>, execute: &'a dyn Fn() -> Result<(), Box<dyn Error>>) -> DummySymbol<'a> {
-      DummySymbol { _target_reached: target_reached, _execute: execute }
+    fn new(
+      target_reached: &'a dyn Fn() -> Result<bool, Box<dyn Error>>,
+      execute: &'a dyn Fn() -> Result<(), Box<dyn Error>>,
+    ) -> DummySymbol<'a> {
+      DummySymbol {
+        _target_reached: target_reached,
+        _execute: execute,
+      }
     }
   }
 
   struct DummyLogger {
-    log: Vec<String>
+    log: Vec<String>,
   }
 
   impl DummyLogger {
@@ -256,14 +297,16 @@ mod test {
 
   #[test]
   fn nothing_needed_to_be_done() {
-    let result = InitializingSymbolRunner::new(DummyLogger::new()).run_symbol(&DummySymbol::new(&|| Ok(true), &|| Ok(())));
+    let result = InitializingSymbolRunner::new(DummyLogger::new())
+      .run_symbol(&DummySymbol::new(&|| Ok(true), &|| Ok(())));
     assert!(result.is_ok());
   }
 
   #[test]
   fn everything_is_ok() {
     let first = RefCell::new(true);
-    let result = InitializingSymbolRunner::new(DummyLogger::new()).run_symbol(&DummySymbol::new(&|| {
+    let result = InitializingSymbolRunner::new(DummyLogger::new()).run_symbol(&DummySymbol::new(
+      &|| {
         let mut _first = first.borrow_mut();
         Ok(if *_first {
           *_first = false;
@@ -271,13 +314,16 @@ mod test {
         } else {
           false
         })
-    }, &|| Ok(())));
+      },
+      &|| Ok(()),
+    ));
     assert!(result.is_ok());
   }
 
   #[test]
   fn executing_did_not_change_state() {
-    let result = InitializingSymbolRunner::new(DummyLogger::new()).run_symbol(&DummySymbol::new(&|| Ok(false), &|| Ok(())));
+    let result = InitializingSymbolRunner::new(DummyLogger::new())
+      .run_symbol(&DummySymbol::new(&|| Ok(false), &|| Ok(())));
     assert_eq!(
       result.unwrap_err().description(),
       "Target not reached after executing symbol"
@@ -286,7 +332,11 @@ mod test {
 
   #[test]
   fn executing_did_not_work() {
-    let err = InitializingSymbolRunner::new(DummyLogger::new()).run_symbol(&DummySymbol::new(&|| Ok(false), &|| Err(Box::new(DummySymbolError::Error(()))))).unwrap_err();
+    let err = InitializingSymbolRunner::new(DummyLogger::new())
+      .run_symbol(&DummySymbol::new(&|| Ok(false), &|| {
+        Err(Box::new(DummySymbolError::Error(())))
+      }))
+      .unwrap_err();
     assert_eq!(err.description(), "Description");
   }
 }

src/storage.rs

@@ -20,14 +20,19 @@ impl SimpleStorage {
   fn get_path(&self, date: Option<u64>) -> String {
     match date {
       Some(d) => format!("{}/_{}/{}", self.0, self.1, d),
-      None => format!("{}/_{}", self.0, self.1)
+      None => format!("{}/_{}", self.0, self.1),
     }
   }
 }
 
 impl Storage for SimpleStorage {
   fn write_filename(&self) -> String {
-    self.get_path(Some(SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs()))
+    self.get_path(Some(
+      SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap()
+        .as_secs(),
+    ))
   }
 
   fn read_filename(&self) -> Result<String, Box<dyn Error>> {
@@ -37,8 +42,15 @@ impl Storage for SimpleStorage {
   fn recent_date(&self) -> Result<u64, Box<dyn Error>> {
     let dir = self.get_path(None);
     try!(read_dir(dir))
-    .map(|entry| entry.ok().and_then(|e| e.file_name().into_string().ok()).and_then(|filename| u64::from_str(&filename).ok()))
-    .fold(None, |maybe_newest, maybe_time| maybe_newest.into_iter().chain(maybe_time).max())
+      .map(|entry| {
+        entry
+          .ok()
+          .and_then(|e| e.file_name().into_string().ok())
+          .and_then(|filename| u64::from_str(&filename).ok())
+      })
+      .fold(None, |maybe_newest, maybe_time| {
+        maybe_newest.into_iter().chain(maybe_time).max()
+      })
       .ok_or_else(|| "Not found".to_string().into())
   }
 }

src/symbols/acme/account_key.rs

@@ -9,12 +9,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct AcmeAccountKey<'a, C: 'a + CommandRunner> {
   path: Cow<'a, Path>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> AcmeAccountKey<'a, C> {
   pub fn new(path: Cow<'a, Path>, command_runner: &'a C) -> Self {
-    AcmeAccountKey { path, command_runner }
+    AcmeAccountKey {
+      path,
+      command_runner,
+    }
   }
 
   fn get_bytes(&self) -> u32 {
@@ -33,27 +36,50 @@ impl<'a, C: CommandRunner> Symbol for AcmeAccountKey<'a, C> {
     if !self.path.exists() {
       return Ok(false);
     }
-    let stdout = try!(self.command_runner.get_output("openssl", &["rsa".as_ref(), "-in".as_ref(), self.path.as_os_str(), "-noout".as_ref(), "-check".as_ref(), "-text".as_ref()]));
+    let stdout = try!(self.command_runner.get_output(
+      "openssl",
+      &[
+        "rsa".as_ref(),
+        "-in".as_ref(),
+        self.path.as_os_str(),
+        "-noout".as_ref(),
+        "-check".as_ref(),
+        "-text".as_ref()
+      ]
+    ));
     Ok(stdout.starts_with(&format!("Private-Key: ({} bit)\n", self.get_bytes()).as_bytes()))
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("openssl", &["genrsa".as_ref(), "-out".as_ref(), self.path.as_os_str(), self.get_bytes().to_string().as_ref()])
+    self.command_runner.run_successfully(
+      "openssl",
+      &[
+        "genrsa".as_ref(),
+        "-out".as_ref(),
+        self.path.as_os_str(),
+        self.get_bytes().to_string().as_ref(),
+      ],
+    )
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
-    vec![ Resource::new("dir", self.path.parent().unwrap().to_string_lossy() ) ]
+    vec![Resource::new(
+      "dir",
+      self.path.parent().unwrap().to_string_lossy(),
+    )]
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/acme/cert.rs

@@ -6,17 +6,20 @@ use std::io::Write;
 use std::path::Path;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use resources::Resource;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct AcmeCert<'a, C: 'a + CommandRunner> {
   domain: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> AcmeCert<'a, C> {
   pub fn new(domain: Cow<'a, str>, command_runner: &'a C) -> Self {
-    AcmeCert { domain, command_runner }
+    AcmeCert {
+      domain,
+      command_runner,
+    }
   }
 
   fn get_csr_path(&self) -> String {
@@ -42,10 +45,44 @@ impl<'a, C: CommandRunner> Symbol for AcmeCert<'a, C> {
       return Ok(false);
     }
 
-    let output = try!(self.command_runner.run_with_args("openssl", &["x509", "-in", &self.get_cert_path(), "-noout", "-subject", "-checkend", &(30*DAYS_IN_SECONDS).to_string()]));
-    if output.status.success() && output.stdout == format!("subject=CN = {}\nCertificate will not expire\n", self.domain).as_bytes() {
-      Ok(self.command_runner.run_successfully("openssl", &["verify", "--untrusted", "/home/acme/lets_encrypt_x3_cross_signed.pem", &self.get_cert_path()]).is_ok())
-    } else if output.status.code() == Some(1) && output.stdout == format!("subject=CN = {}\nCertificate will expire\n", self.domain).as_bytes() {
+    let output = try!(self.command_runner.run_with_args(
+      "openssl",
+      &[
+        "x509",
+        "-in",
+        &self.get_cert_path(),
+        "-noout",
+        "-subject",
+        "-checkend",
+        &(30 * DAYS_IN_SECONDS).to_string()
+      ]
+    ));
+    if output.status.success()
+      && output.stdout
+        == format!(
+          "subject=CN = {}\nCertificate will not expire\n",
+          self.domain
+        )
+        .as_bytes()
+    {
+      Ok(
+        self
+          .command_runner
+          .run_successfully(
+            "openssl",
+            &[
+              "verify",
+              "--untrusted",
+              "/home/acme/lets_encrypt_x3_cross_signed.pem",
+              &self.get_cert_path(),
+            ],
+          )
+          .is_ok(),
+      )
+    } else if output.status.code() == Some(1)
+      && output.stdout
+        == format!("subject=CN = {}\nCertificate will expire\n", self.domain).as_bytes()
+    {
       Ok(false)
     } else {
       Err(try!(String::from_utf8(output.stderr)).into())
@@ -53,7 +90,17 @@ impl<'a, C: CommandRunner> Symbol for AcmeCert<'a, C> {
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    let output = try!(self.command_runner.get_output("acme-tiny", &["--account-key", "/home/acme/account.key", "--csr", &self.get_csr_path(), "--acme-dir", "/home/acme/challenges/"]));
+    let output = try!(self.command_runner.get_output(
+      "acme-tiny",
+      &[
+        "--account-key",
+        "/home/acme/account.key",
+        "--csr",
+        &self.get_csr_path(),
+        "--acme-dir",
+        "/home/acme/challenges/"
+      ]
+    ));
     let mut file = try!(FsFile::create(self.get_cert_path()));
     try!(file.write_all(&output));
     Ok(())
@@ -67,11 +114,13 @@ impl<'a, C: CommandRunner> Symbol for AcmeCert<'a, C> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/acme/chain.rs

@@ -6,17 +6,20 @@ use std::io::Write;
 use std::path::Path;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use resources::Resource;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct AcmeCertChain<'a, C: 'a + CommandRunner> {
   domain: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> AcmeCertChain<'a, C> {
   pub fn new(domain: Cow<'a, str>, command_runner: &'a C) -> Self {
-    AcmeCertChain { domain, command_runner }
+    AcmeCertChain {
+      domain,
+      command_runner,
+    }
   }
 
   fn get_single_cert_path(&self) -> String {
@@ -42,16 +45,52 @@ impl<'a, C: CommandRunner> Symbol for AcmeCertChain<'a, C> {
       return Ok(false);
     }
 
-    let stdout = try!(self.command_runner.get_output("openssl", &["x509", "-in", &self.get_cert_chain_path(), "-noout", "-subject", "-checkend", &(30*DAYS_IN_SECONDS).to_string()]));
-    if stdout != format!("subject=CN = {}\nCertificate will not expire\n", self.domain).as_bytes() {
+    let stdout = try!(self.command_runner.get_output(
+      "openssl",
+      &[
+        "x509",
+        "-in",
+        &self.get_cert_chain_path(),
+        "-noout",
+        "-subject",
+        "-checkend",
+        &(30 * DAYS_IN_SECONDS).to_string()
+      ]
+    ));
+    if stdout
+      != format!(
+        "subject=CN = {}\nCertificate will not expire\n",
+        self.domain
+      )
+      .as_bytes()
+    {
       return Ok(false);
     }
     // FIXME: From my understanding, the -untrusted *.pem parameter shouldn't be necessary, but is necessary with openssl 1.1.0f-3
-    Ok(self.command_runner.run_successfully("openssl", &["verify", "-untrusted", "/home/acme/lets_encrypt_x3_cross_signed.pem", &self.get_cert_chain_path()]).is_ok())
+    Ok(
+      self
+        .command_runner
+        .run_successfully(
+          "openssl",
+          &[
+            "verify",
+            "-untrusted",
+            "/home/acme/lets_encrypt_x3_cross_signed.pem",
+            &self.get_cert_chain_path(),
+          ],
+        )
+        .is_ok(),
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    let output = try!(self.command_runner.get_output("cat", &[self.get_single_cert_path().as_ref(), "/home/acme/lets_encrypt_x3_cross_signed.pem"]));
+    let output = try!(self.command_runner.get_output(
+      "cat",
+      &[
+        self.get_single_cert_path().as_ref(),
+        "/home/acme/lets_encrypt_x3_cross_signed.pem"
+      ]
+    ));
     let mut file = try!(FsFile::create(self.get_cert_chain_path()));
     try!(file.write_all(&output));
     Ok(())
@@ -65,11 +104,13 @@ impl<'a, C: CommandRunner> Symbol for AcmeCertChain<'a, C> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/acme/user.rs

@@ -1,17 +1,17 @@
+use resources::Resource;
 use std::borrow::{Borrow, Cow};
 use std::error::Error;
 use std::fmt;
 use std::ops::Deref;
 use std::path::PathBuf;
-use resources::Resource;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, SymbolAction, SymbolRunner, Symbol};
 use symbols::acme::AcmeAccountKey;
 use symbols::dir::Dir;
 use symbols::file::File;
 use symbols::list::List;
 use symbols::owner::Owner;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct AcmeUser<'a>(Cow<'a, str>);
 
@@ -38,7 +38,10 @@ impl<'a> Symbol for AcmeUser<'a> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
@@ -49,17 +52,41 @@ impl<'a> fmt::Display for AcmeUser<'a> {
   }
 }
 
-pub fn new<'a, S: Into<Cow<'a, str>>, C: CommandRunner, P: 'a + Deref<Target=str>>(command_runner: &'a C, cert: P, user_name: S) -> Box<dyn Symbol + 'a> { // impl trait
+pub fn new<'a, S: Into<Cow<'a, str>>, C: CommandRunner, P: 'a + Deref<Target = str>>(
+  command_runner: &'a C,
+  cert: P,
+  user_name: S,
+) -> Box<dyn Symbol + 'a> {
+  // impl trait
   let user_name_cow = user_name.into();
-  let account_key_file: PathBuf = ["/home", user_name_cow.borrow(), "account.key"].iter().collect();
+  let account_key_file: PathBuf = ["/home", user_name_cow.borrow(), "account.key"]
+    .iter()
+    .collect();
   Box::new(List::new(vec![
-    Box::new(AcmeAccountKey::new(account_key_file.clone().into(), command_runner)),
-    Box::new(Owner::new(account_key_file.to_string_lossy().into_owned(), user_name_cow.clone(), command_runner)),
+    Box::new(AcmeAccountKey::new(
+      account_key_file.clone().into(),
+      command_runner,
+    )),
+    Box::new(Owner::new(
+      account_key_file.to_string_lossy().into_owned(),
+      user_name_cow.clone(),
+      command_runner,
+    )),
     Box::new(Dir::new("/home/acme/challenges")),
-    Box::new(Owner::new("/home/acme/challenges", user_name_cow.clone(), command_runner)),
+    Box::new(Owner::new(
+      "/home/acme/challenges",
+      user_name_cow.clone(),
+      command_runner,
+    )),
     Box::new(Dir::new("/etc/ssl/local_certs")),
-    Box::new(Owner::new("/etc/ssl/local_certs", user_name_cow, command_runner)),
-    Box::new(File::new("/home/acme/lets_encrypt_x3_cross_signed.pem", cert))
+    Box::new(Owner::new(
+      "/etc/ssl/local_certs",
+      user_name_cow,
+      command_runner,
+    )),
+    Box::new(File::new(
+      "/home/acme/lets_encrypt_x3_cross_signed.pem",
+      cert,
+    )),
   ]))
 }
-

src/symbols/dir.rs

@@ -7,17 +7,26 @@ use std::path::Path;
 use resources::Resource;
 use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct Dir<D> where D: AsRef<str> {
-  path: D
+pub struct Dir<D>
+where
+  D: AsRef<str>,
+{
+  path: D,
 }
 
-impl<D> Dir<D> where D: AsRef<str> {
+impl<D> Dir<D>
+where
+  D: AsRef<str>,
+{
   pub fn new(path: D) -> Self {
     Dir { path }
   }
 }
 
-impl<D> Symbol for Dir<D> where D: AsRef<str> {
+impl<D> Symbol for Dir<D>
+where
+  D: AsRef<str>,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let metadata = fs::metadata(self.path.as_ref());
     // Check if dir exists
@@ -31,7 +40,10 @@ impl<D> Symbol for Dir<D> where D: AsRef<str> {
     if metadata.unwrap().is_dir() {
       Ok(true)
     } else {
-      Err(Box::new(io::Error::new(io::ErrorKind::AlreadyExists, "Could not create a directory, non-directory file exists")))
+      Err(Box::new(io::Error::new(
+        io::ErrorKind::AlreadyExists,
+        "Could not create a directory, non-directory file exists",
+      )))
     }
   }
 
@@ -55,12 +67,18 @@ impl<D> Symbol for Dir<D> where D: AsRef<str> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+  where
+    Self: 'a,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<D> fmt::Display for Dir<D> where D: AsRef<str> {
+impl<D> fmt::Display for Dir<D>
+where
+  D: AsRef<str>,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "Dir {}", self.path.as_ref())
   }

src/symbols/factory.rs

@@ -4,18 +4,18 @@ use std::path::Path;
 
 use command_runner::{CommandRunner, SetuidCommandRunner};
 use storage::{SimpleStorage, Storage};
-use symbols::{Action, Symbol, SymbolRunner};
 use symbols::acme::{AcmeCert, AcmeCertChain};
 use symbols::file::File;
 use symbols::git::checkout::GitCheckout;
 use symbols::hook::Hook;
 use symbols::list::ListAction;
 use symbols::mariadb::{DatabaseDump, MariaDBDatabase, MariaDBUser};
-use symbols::nginx::server::{NginxServer, server_config, php_server_config_snippet};
+use symbols::nginx::server::{php_server_config_snippet, server_config, NginxServer};
 use symbols::owner::Owner;
-use symbols::stored_directory::{StoredDirectory, StorageDirection};
+use symbols::stored_directory::{StorageDirection, StoredDirectory};
 use symbols::systemd::reload::ReloadService;
 use symbols::tls::SelfSignedTlsCert;
+use symbols::{Action, Symbol, SymbolRunner};
 
 pub trait Policy {
   fn user_name_for_host(&self, host_name: &'static str) -> String;
@@ -36,7 +36,7 @@ pub struct SymbolFactory<'a, C: 'a + CommandRunner, R: 'a + SymbolRunner, P: 'a
   command_runner: &'a C,
   acme_command_runner: SetuidCommandRunner<'a, C>,
   symbol_runner: &'a R,
-  policy: &'a P
+  policy: &'a P,
 }
 
 impl<'b, C: 'b + CommandRunner, R: 'b + SymbolRunner, P: 'b + Policy> SymbolFactory<'b, C, R, P> {
@@ -44,39 +44,45 @@ impl<'b, C: 'b + CommandRunner, R: 'b + SymbolRunner, P: 'b + Policy> SymbolFact
     let acme_user = "acme"; // FIXME: CONFIG
 
     let acme_command_runner = SetuidCommandRunner::new(acme_user, command_runner);
-    SymbolFactory { command_runner, acme_command_runner, symbol_runner, policy }
+    SymbolFactory {
+      command_runner,
+      acme_command_runner,
+      symbol_runner,
+      policy,
+    }
   }
 
-  pub fn get_nginx_acme_server<'a, 'c: 'a, S: 'a + Symbol>(&'c self, host: &'static str, nginx_server_symbol: S) -> Box<dyn Action + 'a> {
+  pub fn get_nginx_acme_server<'a, 'c: 'a, S: 'a + Symbol>(
+    &'c self,
+    host: &'static str,
+    nginx_server_symbol: S,
+  ) -> Box<dyn Action + 'a> {
     Box::new(ListAction::new(vec![
-      Box::new(SelfSignedTlsCert::new(
-        host.into(),
-        self.command_runner
-      )).into_action(self.symbol_runner),
+      Box::new(SelfSignedTlsCert::new(host.into(), self.command_runner))
+        .into_action(self.symbol_runner),
       Box::new(Hook::new(
         nginx_server_symbol,
-        ReloadService::new("nginx", self.command_runner)
-      )).into_action(self.symbol_runner),
-      Box::new(AcmeCert::new(
-        host.into(),
-        &self.acme_command_runner
-      )).into_action(self.symbol_runner),
+        ReloadService::new("nginx", self.command_runner),
+      ))
+      .into_action(self.symbol_runner),
+      Box::new(AcmeCert::new(host.into(), &self.acme_command_runner))
+        .into_action(self.symbol_runner),
       Box::new(Hook::new(
-        AcmeCertChain::new(
-          host.into(),
-          &self.acme_command_runner
-        ),
-        ReloadService::new("nginx", self.command_runner)
-      )).into_action(self.symbol_runner)
+        AcmeCertChain::new(host.into(), &self.acme_command_runner),
+        ReloadService::new("nginx", self.command_runner),
+      ))
+      .into_action(self.symbol_runner),
     ]))
   }
   pub fn get_nginx_acme_challenge_config<'a>(&'a self) -> Box<dyn Action + 'a> {
     Box::new(File::new(
-      "/etc/nginx/snippets/acme-challenge.conf", "location ^~ /.well-known/acme-challenge/ {
+      "/etc/nginx/snippets/acme-challenge.conf",
+      "location ^~ /.well-known/acme-challenge/ {
   alias /home/acme/challenges/;
   try_files $uri =404;
-}"
-    )).into_action(self.symbol_runner)
+}",
+    ))
+    .into_action(self.symbol_runner)
   }
 
   fn get_php_fpm_pool_socket_path<'a>(&'a self, user_name: &str) -> String {
@@ -99,47 +105,66 @@ pm = ondemand
 pm.max_children = 10
 catch_workers_output = yes
 env[PATH] = /usr/local/bin:/usr/bin:/bin
-"
-      , user_name, socket)),
-      ReloadService::new("php7.0-fpm", self.command_runner)
-    )).into_action(self.symbol_runner)
+",
+          user_name, socket
+        ),
+      ),
+      ReloadService::new("php7.0-fpm", self.command_runner),
+    ))
+    .into_action(self.symbol_runner)
   }
 
-  pub fn serve_php<'a>(&'a self, host_name: &'static str, root_dir: Cow<'a, str>) -> Box<dyn Action + 'a> {
+  pub fn serve_php<'a>(
+    &'a self,
+    host_name: &'static str,
+    root_dir: Cow<'a, str>,
+  ) -> Box<dyn Action + 'a> {
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     Box::new(ListAction::new(vec![
       self.get_php_fpm_pool(&user_name),
-      self.get_nginx_acme_server(host_name,
-        NginxServer::new_php(
+      self.get_nginx_acme_server(
         host_name,
-          socket.into(),
-          root_dir,
-          self.command_runner
-        )
-      )
+        NginxServer::new_php(host_name, socket.into(), root_dir, self.command_runner),
+      ),
     ]))
   }
 
-  pub fn serve_wordpress<'a>(&'a self, host_name: &'static str, root_dir: Cow<'a, str>) -> Box<dyn Action + 'a> {
+  pub fn serve_wordpress<'a>(
+    &'a self,
+    host_name: &'static str,
+    root_dir: Cow<'a, str>,
+  ) -> Box<dyn Action + 'a> {
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     Box::new(ListAction::new(vec![
       self.get_php_fpm_pool(&user_name),
-      self.get_nginx_acme_server(host_name,
+      self.get_nginx_acme_server(
+        host_name,
         NginxServer::new(
           host_name,
-          server_config(host_name, &format!("{}
+          server_config(
+            host_name,
+            &format!(
+              "{}
               location / {{
                 try_files         $uri $uri/ /index.php?$args;
               }}
-          ", php_server_config_snippet(socket.into(), root_dir))),
-        self.command_runner
-      ))
+          ",
+              php_server_config_snippet(socket.into(), root_dir)
+            ),
+          ),
+          self.command_runner,
+        ),
+      ),
     ]))
   }
 
-  pub fn serve_dokuwiki<'a>(&'a self, host_name: &'static str, root_dir: &'static str) -> Box<dyn Action + 'a> {
+  pub fn serve_dokuwiki<'a>(
+    &'a self,
+    host_name: &'static str,
+    root_dir: &'static str,
+  ) -> Box<dyn Action + 'a> {
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     Box::new(ListAction::new(vec![
@@ -174,15 +199,23 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
     ]))
   }
 
-  pub fn serve_nextcloud<'a>(&'a self, host_name: &'static str, root_dir: Cow<'a, str>) -> Box<dyn Action + 'a> {
+  pub fn serve_nextcloud<'a>(
+    &'a self,
+    host_name: &'static str,
+    root_dir: Cow<'a, str>,
+  ) -> Box<dyn Action + 'a> {
     let user_name = self.policy.user_name_for_host(host_name);
     let socket = self.get_php_fpm_pool_socket_path(&user_name);
     Box::new(ListAction::new(vec![
       self.get_php_fpm_pool(&user_name),
-      self.get_nginx_acme_server(host_name,
+      self.get_nginx_acme_server(
+        host_name,
         NginxServer::new(
           host_name,
-          server_config(host_name, &format!("{}
+          server_config(
+            host_name,
+            &format!(
+              "{}
               client_max_body_size 500M;
 
               # Disable gzip to avoid the removal of the ETag header
@@ -230,50 +263,106 @@ env[PATH] = /usr/local/bin:/usr/bin:/bin
               location ~* \\.(?:jpg|jpeg|gif|bmp|ico|png|swf)$ {{
                 access_log off;
               }}
-          ", php_server_config_snippet(socket.into(), root_dir))),
-        self.command_runner
-      ))
+          ",
+              php_server_config_snippet(socket.into(), root_dir)
+            ),
+          ),
+          self.command_runner,
+        ),
+      ),
     ]))
   }
 
-  pub fn serve_redir<'a>(&'a self, host_name: &'static str, target: &'static str) -> Box<dyn Action + 'a> {
-    self.get_nginx_acme_server(host_name, NginxServer::new_redir(host_name, target, self.command_runner))
+  pub fn serve_redir<'a>(
+    &'a self,
+    host_name: &'static str,
+    target: &'static str,
+  ) -> Box<dyn Action + 'a> {
+    self.get_nginx_acme_server(
+      host_name,
+      NginxServer::new_redir(host_name, target, self.command_runner),
+    )
   }
 
   pub fn serve_static<'a>(&'a self, host_name: &'static str, dir: &'a str) -> Box<dyn Action + 'a> {
-    self.get_nginx_acme_server(host_name, NginxServer::new_static(host_name, dir, self.command_runner))
+    self.get_nginx_acme_server(
+      host_name,
+      NginxServer::new_static(host_name, dir, self.command_runner),
+    )
   }
 
-  pub fn get_stored_directory<'a, T: Into<String>>(&'a self, storage_name: &'static str, target: T) -> (Box<dyn Action + 'a>, Box<dyn Action + 'a>) {
+  pub fn get_stored_directory<'a, T: Into<String>>(
+    &'a self,
+    storage_name: &'static str,
+    target: T,
+  ) -> (Box<dyn Action + 'a>, Box<dyn Action + 'a>) {
     let data = SimpleStorage::new("/root/data".to_string(), storage_name.to_string());
     let string_target = target.into();
     (
-      Box::new(StoredDirectory::new(string_target.clone().into(), data.clone(), StorageDirection::Save, self.command_runner)).into_action(self.symbol_runner),
-      Box::new(StoredDirectory::new(string_target.into(), data.clone(), StorageDirection::Load, self.command_runner)).into_action(self.symbol_runner)
+      Box::new(StoredDirectory::new(
+        string_target.clone().into(),
+        data.clone(),
+        StorageDirection::Save,
+        self.command_runner,
+      ))
+      .into_action(self.symbol_runner),
+      Box::new(StoredDirectory::new(
+        string_target.into(),
+        data.clone(),
+        StorageDirection::Load,
+        self.command_runner,
+      ))
+      .into_action(self.symbol_runner),
     )
   }
 
   pub fn get_mariadb_database<'a>(&'a self, name: &'static str) -> Box<dyn Action + 'a> {
     let db_dump = SimpleStorage::new("/root/data".to_string(), format!("{}.sql", name));
     Box::new(ListAction::new(vec![
-      Box::new(MariaDBDatabase::new(name.into(), db_dump.read_filename().unwrap().into(), self.command_runner)).into_action(self.symbol_runner),
-      Box::new(DatabaseDump::new(name, db_dump, self.command_runner)).into_action(self.symbol_runner)
+      Box::new(MariaDBDatabase::new(
+        name.into(),
+        db_dump.read_filename().unwrap().into(),
+        self.command_runner,
+      ))
+      .into_action(self.symbol_runner),
+      Box::new(DatabaseDump::new(name, db_dump, self.command_runner))
+        .into_action(self.symbol_runner),
     ]))
   }
 
   pub fn get_mariadb_user<'a>(&'a self, user_name: &'static str) -> Box<dyn Action + 'a> {
-    Box::new(MariaDBUser::new(user_name.into(), self.command_runner)).into_action(self.symbol_runner)
+    Box::new(MariaDBUser::new(user_name.into(), self.command_runner))
+      .into_action(self.symbol_runner)
   }
 
-  pub fn get_git_checkout<'a, T: 'a + AsRef<str>>(&'a self, target: T, source: &'a str, branch: &'a str) -> Box<dyn Action + 'a> {
-    Box::new(GitCheckout::new(target, source, branch, self.command_runner)).into_action(self.symbol_runner)
+  pub fn get_git_checkout<'a, T: 'a + AsRef<str>>(
+    &'a self,
+    target: T,
+    source: &'a str,
+    branch: &'a str,
+  ) -> Box<dyn Action + 'a> {
+    Box::new(GitCheckout::new(
+      target,
+      source,
+      branch,
+      self.command_runner,
+    ))
+    .into_action(self.symbol_runner)
   }
 
-  pub fn get_owner<'a, F: 'a + AsRef<str>>(&'a self, file: F, user: &'a str) -> Box<dyn Action + 'a> {
+  pub fn get_owner<'a, F: 'a + AsRef<str>>(
+    &'a self,
+    file: F,
+    user: &'a str,
+  ) -> Box<dyn Action + 'a> {
     Box::new(Owner::new(file, user.into(), self.command_runner)).into_action(self.symbol_runner)
   }
 
-  pub fn get_file<'a, F: 'a + Deref<Target=str>, Q: 'a + AsRef<Path>>(&'a self, path: Q, content: F) -> Box<dyn Action + 'a> {
+  pub fn get_file<'a, F: 'a + Deref<Target = str>, Q: 'a + AsRef<Path>>(
+    &'a self,
+    path: Q,
+    content: F,
+  ) -> Box<dyn Action + 'a> {
     Box::new(File::new(path, content)).into_action(self.symbol_runner)
   }
 }

src/symbols/file.rs

@@ -6,21 +6,33 @@ use std::io::{Read, Write};
 use std::ops::Deref;
 use std::path::Path;
 
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use resources::Resource;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
+pub struct File<C, D>
+where
+  C: Deref<Target = str>,
+  D: AsRef<Path>,
+{
   path: D,
-  content: C
+  content: C,
 }
 
-impl<C, D> File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
+impl<C, D> File<C, D>
+where
+  C: Deref<Target = str>,
+  D: AsRef<Path>,
+{
   pub fn new(path: D, content: C) -> Self {
     File { path, content }
   }
 }
 
-impl<C, D> Symbol for File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
+impl<C, D> Symbol for File<C, D>
+where
+  C: Deref<Target = str>,
+  D: AsRef<Path>,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let file = FsFile::open(self.path.as_ref());
     // Check if file exists
@@ -37,9 +49,9 @@ impl<C, D> Symbol for File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
     loop {
       match (file_content.next(), target_content.next()) {
         (None, None) => return Ok(true),
-        (Some(Ok(a)), Some(b)) if a == b => {},
+        (Some(Ok(a)), Some(b)) if a == b => {}
         (Some(Err(e)), _) => return Err(Box::new(e)),
-        (_, _) => return Ok(false)
+        (_, _) => return Ok(false),
       }
     }
   }
@@ -51,19 +63,32 @@ impl<C, D> Symbol for File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
-    vec![ Resource::new("dir", Path::new(self.path.as_ref()).parent().unwrap().to_string_lossy() ) ]
+    vec![Resource::new(
+      "dir",
+      Path::new(self.path.as_ref())
+        .parent()
+        .unwrap()
+        .to_string_lossy(),
+    )]
   }
 
   fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+  where
+    Self: 'a,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<C, D> fmt::Display for File<C, D> where C: Deref<Target=str>, D: AsRef<Path> {
+impl<C, D> fmt::Display for File<C, D>
+where
+  C: Deref<Target = str>,
+  D: AsRef<Path>,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "File {}", self.path.as_ref().display())
   }

src/symbols/git/checkout.rs

@@ -11,18 +11,29 @@ pub struct GitCheckout<'a, C: 'a + CommandRunner, T: AsRef<str>> {
   target: T,
   source: &'a str,
   branch: &'a str,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner, T: AsRef<str>> GitCheckout<'a, C, T> {
   pub fn new(target: T, source: &'a str, branch: &'a str, command_runner: &'a C) -> Self {
-    GitCheckout { target, source, branch, command_runner }
+    GitCheckout {
+      target,
+      source,
+      branch,
+      command_runner,
+    }
   }
 }
 
 impl<'a, C: CommandRunner, T: AsRef<str>> fmt::Display for GitCheckout<'a, C, T> {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-    write!(f, "Checkout {} (branch {}) into {}", self.source, self.branch, self.target.as_ref())
+    write!(
+      f,
+      "Checkout {} (branch {}) into {}",
+      self.source,
+      self.branch,
+      self.target.as_ref()
+    )
   }
 }
 
@@ -54,7 +65,18 @@ impl<'a, C: CommandRunner, T: AsRef<str>> Symbol for GitCheckout<'a, C, T> {
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     if !Path::new(self.target.as_ref()).exists() {
-      return self.command_runner.run_successfully("git", &["clone", "--depth", "1", "-b", self.branch, self.source, self.target.as_ref()]);
+      return self.command_runner.run_successfully(
+        "git",
+        &[
+          "clone",
+          "--depth",
+          "1",
+          "-b",
+          self.branch,
+          self.source,
+          self.target.as_ref(),
+        ],
+      );
     }
     try!(self._run_in_target_repo(&["fetch", self.source, self.branch]));
     try!(self._run_in_target_repo(&["merge", "FETCH_HEAD"]));
@@ -62,7 +84,13 @@ impl<'a, C: CommandRunner, T: AsRef<str>> Symbol for GitCheckout<'a, C, T> {
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
-    vec![ Resource::new("dir", Path::new(self.target.as_ref()).parent().unwrap().to_string_lossy()) ]
+    vec![Resource::new(
+      "dir",
+      Path::new(self.target.as_ref())
+        .parent()
+        .unwrap()
+        .to_string_lossy(),
+    )]
   }
 
   fn provides(&self) -> Option<Vec<Resource>> {
@@ -73,11 +101,13 @@ impl<'a, C: CommandRunner, T: AsRef<str>> Symbol for GitCheckout<'a, C, T> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/git/submodules.rs

@@ -7,12 +7,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct GitSubmodules<'a, C: 'a + CommandRunner> {
   target: &'a str,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> GitSubmodules<'a, C> {
   pub fn new(target: &'a str, command_runner: &'a C) -> Self {
-    GitSubmodules { target, command_runner }
+    GitSubmodules {
+      target,
+      command_runner,
+    }
   }
 }
 
@@ -35,8 +38,14 @@ impl<'a, C: CommandRunner> Symbol for GitSubmodules<'a, C> {
     if !Path::new(self.target).exists() {
       return Ok(false);
     }
-    let output = try!(String::from_utf8(try!(self._run_in_target_repo(&["submodule", "status"]))));
-    Ok(output.lines().all(|line| line.is_empty() || line.starts_with(' ')))
+    let output = try!(String::from_utf8(try!(
+      self._run_in_target_repo(&["submodule", "status"])
+    )));
+    Ok(
+      output
+        .lines()
+        .all(|line| line.is_empty() || line.starts_with(' ')),
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
@@ -48,11 +57,13 @@ impl<'a, C: CommandRunner> Symbol for GitSubmodules<'a, C> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/hook.rs

@@ -4,21 +4,39 @@ use std::fmt;
 use resources::Resource;
 use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct Hook<A, B> where A: Symbol, B: Symbol {
+pub struct Hook<A, B>
+where
+  A: Symbol,
+  B: Symbol,
+{
   a: A,
-  b: B
+  b: B,
 }
 
 // A and B are executed if either A or B are not reached
-impl<A, B> Hook<A, B> where A: Symbol, B: Symbol {
+impl<A, B> Hook<A, B>
+where
+  A: Symbol,
+  B: Symbol,
+{
   pub fn new(a: A, b: B) -> Self {
     Hook { a, b }
   }
 }
 
-impl<A, B> Symbol for Hook<A, B> where A: Symbol, B: Symbol {
+impl<A, B> Symbol for Hook<A, B>
+where
+  A: Symbol,
+  B: Symbol,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
-    self.a.target_reached().and_then(|reached| if reached { self.b.target_reached() } else { Ok(reached) })
+    self.a.target_reached().and_then(|reached| {
+      if reached {
+        self.b.target_reached()
+      } else {
+        Ok(reached)
+      }
+    })
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
@@ -41,19 +59,30 @@ impl<A, B> Symbol for Hook<A, B> where A: Symbol, B: Symbol {
     if let Some(provides) = self.b.provides() {
       r.extend(provides.into_iter());
     }
-    if r.is_empty() { None } else { Some(r) }
+    if r.is_empty() {
+      None
+    } else {
+      Some(r)
+    }
   }
 
   fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+  where
+    Self: 'a,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<A, B> fmt::Display for Hook<A, B> where A: Symbol, B: Symbol {
+impl<A, B> fmt::Display for Hook<A, B>
+where
+  A: Symbol,
+  B: Symbol,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "Hook {} and then {}", self.a, self.b)
   }
@@ -64,36 +93,58 @@ mod test {
   use std::error::Error;
   use std::fmt;
 
-  use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
   use symbols::hook::Hook;
+  use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
   struct ErrSymbol(String);
   impl Symbol for ErrSymbol {
-    fn target_reached(&self) -> Result<bool, Box<dyn Error>> { Err(self.0.clone().into()) }
-    fn execute(&self) -> Result<(), Box<dyn Error>> { Err(self.0.clone().into()) }
+    fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
+      Err(self.0.clone().into())
+    }
+    fn execute(&self) -> Result<(), Box<dyn Error>> {
+      Err(self.0.clone().into())
+    }
     fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> {
       Box::new(SymbolAction::new(runner, self))
     }
 
-    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+    where
+      Self: 'a,
+    {
       Box::new(OwnedSymbolAction::new(runner, *self))
     }
   }
-  impl fmt::Display for ErrSymbol { fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error>{ write!(f, "") } }
+  impl fmt::Display for ErrSymbol {
+    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+      write!(f, "")
+    }
+  }
 
   struct OkSymbol(bool);
   impl Symbol for OkSymbol {
-    fn target_reached(&self) -> Result<bool, Box<dyn Error>> { Ok(self.0) }
-    fn execute(&self) -> Result<(), Box<dyn Error>> { Ok(()) }
+    fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
+      Ok(self.0)
+    }
+    fn execute(&self) -> Result<(), Box<dyn Error>> {
+      Ok(())
+    }
     fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> {
       Box::new(SymbolAction::new(runner, self))
     }
 
-    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+    fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+    where
+      Self: 'a,
+    {
       Box::new(OwnedSymbolAction::new(runner, *self))
     }
   }
-  impl fmt::Display for OkSymbol { fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error>{ write!(f, "") } }
+  impl fmt::Display for OkSymbol {
+    fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+      write!(f, "")
+    }
+  }
 
   #[test]
   fn first_target_reached_fails() {

src/symbols/list.rs

@@ -5,7 +5,7 @@ use resources::Resource;
 use symbols::{Action, Symbol, SymbolRunner};
 
 pub struct List<'a> {
-  symbols: Vec<Box<dyn Symbol + 'a>>
+  symbols: Vec<Box<dyn Symbol + 'a>>,
 }
 
 impl<'a> List<'a> {
@@ -35,7 +35,9 @@ impl<'a> Symbol for List<'a> {
     let mut r = vec![];
     for symbol in &self.symbols {
       for req in symbol.get_prerequisites() {
-        if self.provides().map_or(true, |p| !p.contains(&req)) { r.push(req) }
+        if self.provides().map_or(true, |p| !p.contains(&req)) {
+          r.push(req)
+        }
       }
     }
     r
@@ -48,21 +50,34 @@ impl<'a> Symbol for List<'a> {
         r.extend(provides.into_iter());
       }
     }
-    if r.is_empty() { None } else { Some(r) }
+    if r.is_empty() {
+      None
+    } else {
+      Some(r)
+    }
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolListAction::new(runner, &self.symbols))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
-    Box::new(ListAction::new(self.symbols.into_iter().map(|s| s.into_action(runner)).collect()))
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
+    Box::new(ListAction::new(
+      self
+        .symbols
+        .into_iter()
+        .map(|s| s.into_action(runner))
+        .collect(),
+    ))
   }
 }
 
 struct SymbolListAction<'a> {
   runner: &'a dyn SymbolRunner,
-  symbols: &'a [Box<dyn Symbol + 'a>]
+  symbols: &'a [Box<dyn Symbol + 'a>],
 }
 
 impl<'a> SymbolListAction<'a> {
@@ -81,7 +96,7 @@ impl<'a> Action for SymbolListAction<'a> {
 }
 
 pub struct ListAction<'a> {
-  actions: Vec<Box<dyn Action + 'a>>
+  actions: Vec<Box<dyn Action + 'a>>,
 }
 
 impl<'a> ListAction<'a> {

src/symbols/mariadb/database.rs

@@ -8,16 +8,22 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 pub struct MariaDBDatabase<'a, C: 'a + CommandRunner> {
   db_name: Cow<'a, str>,
   seed_file: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> MariaDBDatabase<'a, C> {
   pub fn new(db_name: Cow<'a, str>, seed_file: Cow<'a, str>, command_runner: &'a C) -> Self {
-    MariaDBDatabase { db_name, seed_file, command_runner }
+    MariaDBDatabase {
+      db_name,
+      seed_file,
+      command_runner,
+    }
   }
 
   fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
-    let b = try!(self.command_runner.get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
+    let b = try!(self
+      .command_runner
+      .get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
     Ok(try!(String::from_utf8(b)))
   }
 }
@@ -30,23 +36,34 @@ impl<'a, C: CommandRunner> fmt::Display for MariaDBDatabase<'a, C> {
 
 impl<'a, C: CommandRunner> Symbol for MariaDBDatabase<'a, C> {
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
-    Ok(try!(self.run_sql(&format!("SHOW DATABASES LIKE '{}'", self.db_name))).trim_end() == self.db_name)
+    Ok(
+      try!(self.run_sql(&format!("SHOW DATABASES LIKE '{}'", self.db_name))).trim_end()
+        == self.db_name,
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     try!(self.run_sql(&format!("CREATE DATABASE {}", self.db_name)));
-    self.command_runner.run_successfully("sh", &["-c", &format!("mariadb '{}' < {}", self.db_name, self.seed_file)])
+    self.command_runner.run_successfully(
+      "sh",
+      &[
+        "-c",
+        &format!("mariadb '{}' < {}", self.db_name, self.seed_file),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/mariadb/database_dump.rs

@@ -3,22 +3,33 @@ use std::fmt;
 use std::str::FromStr;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use storage::Storage;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct DatabaseDump<'a, N, C, S> where N: 'a + AsRef<str>, C: 'a + CommandRunner, S: Storage {
+pub struct DatabaseDump<'a, N, C, S>
+where
+  N: 'a + AsRef<str>,
+  C: 'a + CommandRunner,
+  S: Storage,
+{
   db_name: N,
   storage: S,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> DatabaseDump<'a, N, C, S> {
   pub fn new(db_name: N, storage: S, command_runner: &'a C) -> Self {
-    DatabaseDump { db_name, storage, command_runner }
+    DatabaseDump {
+      db_name,
+      storage,
+      command_runner,
+    }
   }
 
   fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
-    let b = try!(self.command_runner.get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
+    let b = try!(self
+      .command_runner
+      .get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
     Ok(try!(String::from_utf8(b)))
   }
 }
@@ -33,23 +44,37 @@ impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> Symbol for DatabaseDump<'a
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let dump_date = try!(self.storage.recent_date());
     let modified_date = try!(self.run_sql(&format!("select UNIX_TIMESTAMP(MAX(UPDATE_TIME)) from information_schema.tables WHERE table_schema = '{}'", self.db_name.as_ref())));
-    if modified_date.trim_end() == "NULL" { return Ok(false); }
+    if modified_date.trim_end() == "NULL" {
+      return Ok(false);
+    }
     Ok(try!(u64::from_str(modified_date.trim_end())) <= dump_date)
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("sh", &["-c", &format!("mysqldump '{}' > {}", self.db_name.as_ref(), self.storage.write_filename())])
+    self.command_runner.run_successfully(
+      "sh",
+      &[
+        "-c",
+        &format!(
+          "mysqldump '{}' > {}",
+          self.db_name.as_ref(),
+          self.storage.write_filename()
+        ),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/mariadb/mod.rs

@@ -1,6 +1,6 @@
 mod database;
-mod user;
 mod database_dump;
+mod user;
 
 pub use self::database::MariaDBDatabase;
 pub use self::database_dump::DatabaseDump;

src/symbols/mariadb/user.rs

@@ -8,16 +8,21 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct MariaDBUser<'a, C: 'a + CommandRunner> {
   user_name: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> MariaDBUser<'a, C> {
   pub fn new(user_name: Cow<'a, str>, command_runner: &'a C) -> Self {
-    MariaDBUser { user_name, command_runner }
+    MariaDBUser {
+      user_name,
+      command_runner,
+    }
   }
 
   fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
-    let b = try!(self.command_runner.get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
+    let b = try!(self
+      .command_runner
+      .get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
     Ok(try!(String::from_utf8(b)))
   }
 }
@@ -30,11 +35,21 @@ impl<'a, C: CommandRunner> fmt::Display for MariaDBUser<'a, C> {
 
 impl<'a, C: CommandRunner> Symbol for MariaDBUser<'a, C> {
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
-    Ok(try!(self.run_sql(&format!("SELECT User FROM mysql.user WHERE User = '{}' AND plugin = 'unix_socket'", self.user_name))).trim_end() == self.user_name)
+    Ok(
+      try!(self.run_sql(&format!(
+        "SELECT User FROM mysql.user WHERE User = '{}' AND plugin = 'unix_socket'",
+        self.user_name
+      )))
+      .trim_end()
+        == self.user_name,
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    try!(self.run_sql(&format!("GRANT ALL ON {0}.* TO {0} IDENTIFIED VIA unix_socket", self.user_name)));
+    try!(self.run_sql(&format!(
+      "GRANT ALL ON {0}.* TO {0} IDENTIFIED VIA unix_socket",
+      self.user_name
+    )));
     Ok(())
   }
 
@@ -46,11 +61,13 @@ impl<'a, C: CommandRunner> Symbol for MariaDBUser<'a, C> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/mod.rs

@@ -1,6 +1,6 @@
+use resources::Resource;
 use std::error::Error;
 use std::fmt::Display;
-use resources::Resource;
 
 pub trait Action {
   fn run(&self) -> Result<(), Box<dyn Error>>;
@@ -27,13 +27,15 @@ pub trait Symbol: Display {
     None
   }
   fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>;
-  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a;
+  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+  where
+    Self: 'a;
 }
 
 // SymbolAction
 pub struct SymbolAction<'a, S: Symbol + 'a> {
   runner: &'a dyn SymbolRunner,
-  symbol: &'a S
+  symbol: &'a S,
 }
 
 impl<'a, S: Symbol> SymbolAction<'a, S> {
@@ -50,7 +52,7 @@ impl<'a, S: Symbol> Action for SymbolAction<'a, S> {
 
 pub struct OwnedSymbolAction<'a, S: Symbol + 'a> {
   runner: &'a dyn SymbolRunner,
-  symbol: S
+  symbol: S,
 }
 
 impl<'a, S: Symbol + 'a> OwnedSymbolAction<'a, S> {

src/symbols/nginx/server.rs

@@ -4,14 +4,14 @@ use std::io;
 use std::ops::Deref;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
-use symbols::file::File as FileSymbol;
 use resources::Resource;
+use symbols::file::File as FileSymbol;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 #[derive(Debug)]
 pub enum NginxServerError<E: Error> {
   ExecError(E),
-  GenericError
+  GenericError,
 }
 
 impl From<io::Error> for NginxServerError<io::Error> {
@@ -24,13 +24,13 @@ impl<E: Error> Error for NginxServerError<E> {
   fn description(&self) -> &str {
     match self {
       NginxServerError::ExecError(ref e) => e.description(),
-      NginxServerError::GenericError => "Generic error"
+      NginxServerError::GenericError => "Generic error",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
       NginxServerError::ExecError(ref e) => Some(e),
-      _ => None
+      _ => None,
     }
   }
 }
@@ -41,7 +41,10 @@ impl<E: Error> fmt::Display for NginxServerError<E> {
   }
 }
 
-pub struct NginxServer<'a, C: 'a + CommandRunner, T> where T: Deref<Target=str> {
+pub struct NginxServer<'a, C: 'a + CommandRunner, T>
+where
+  T: Deref<Target = str>,
+{
   command_runner: &'a C,
   file: FileSymbol<T, String>,
 }
@@ -49,7 +52,8 @@ pub struct NginxServer<'a, C: 'a + CommandRunner, T> where T: Deref<Target=str>
 use std::borrow::Cow;
 
 pub fn server_config(domain: &str, content: &str) -> String {
-  format!("server {{
+  format!(
+    "server {{
     listen                  443 ssl http2;
     server_name             {0};
     include                 \"snippets/acme-challenge.conf\";
@@ -71,17 +75,25 @@ server {{
       return 301 https://$host$request_uri;
     }}
 }}
-", domain, content)
+",
+    domain, content
+  )
 }
 
-pub fn php_server_config_snippet<'a>(socket_path: Cow<'a, str>, static_path: Cow<'a, str>) -> String {
-  format!("
+pub fn php_server_config_snippet<'a>(
+  socket_path: Cow<'a, str>,
+  static_path: Cow<'a, str>,
+) -> String {
+  format!(
+    "
     root                {};
     index               index.html index.php;
     location ~ [^/]\\.php(/|$) {{
       fastcgi_pass      unix:{};
       include           \"snippets/fastcgi-php.conf\";
-    }}", static_path, socket_path)
+    }}",
+    static_path, socket_path
+  )
 }
 
 pub trait SocketSpec {
@@ -110,14 +122,26 @@ impl SocketSpec for LocalTcpSocket {
 
 impl<'a, C: CommandRunner> NginxServer<'a, C, String> {
   pub fn new_redir(domain: &'a str, target: &'a str, command_runner: &'a C) -> Self {
-    let content = server_config(domain, &format!("location / {{
+    let content = server_config(
+      domain,
+      &format!(
+        "location / {{
   return 301 $scheme://{}$request_uri;
-}}", target));
+}}",
+        target
+      ),
+    );
     NginxServer::new(domain, content, command_runner)
   }
 
-  pub fn new_proxy<S: SocketSpec>(domain: &'a str, socket_path: S, static_path: &'a str, command_runner: &'a C) -> Self {
-    let proxy_content = format!("location / {{
+  pub fn new_proxy<S: SocketSpec>(
+    domain: &'a str,
+    socket_path: S,
+    static_path: &'a str,
+    command_runner: &'a C,
+  ) -> Self {
+    let proxy_content = format!(
+      "location / {{
   try_files             $uri @proxy;
 }}
 
@@ -125,25 +149,44 @@ location @proxy {{
   include               fastcgi_params;
   proxy_pass            http://{};
   proxy_redirect        off;
-}}", socket_path.to_nginx());
-
-    let content = server_config(domain, &format!("
+}}",
+      socket_path.to_nginx()
+    );
+
+    let content = server_config(
+      domain,
+      &format!(
+        "
     root                    {};
     {}
-", static_path, proxy_content));
+",
+        static_path, proxy_content
+      ),
+    );
     NginxServer::new(domain, content, command_runner)
   }
 
-  pub fn new_php(domain: &'a str, socket_path: Cow<'a, str>, static_path: Cow<'a, str>, command_runner: &'a C) -> Self {
+  pub fn new_php(
+    domain: &'a str,
+    socket_path: Cow<'a, str>,
+    static_path: Cow<'a, str>,
+    command_runner: &'a C,
+  ) -> Self {
     let content = server_config(domain, &php_server_config_snippet(socket_path, static_path));
     NginxServer::new(domain, content, command_runner)
   }
 
   pub fn new_static(domain: &'a str, static_path: &'a str, command_runner: &'a C) -> Self {
-    let content = server_config(domain, &format!("
+    let content = server_config(
+      domain,
+      &format!(
+        "
     root                    {};
     try_files $uri $uri/ $uri.html =404;
-", static_path));
+",
+        static_path
+      ),
+    );
     NginxServer::new(domain, content, command_runner)
   }
 
@@ -151,12 +194,15 @@ location @proxy {{
     let file_path = String::from("/etc/nginx/sites-enabled/") + domain;
     NginxServer {
       command_runner,
-      file: FileSymbol::new(file_path, content)
+      file: FileSymbol::new(file_path, content),
     }
   }
 }
 
-impl<'a, C: CommandRunner, T> Symbol for NginxServer<'a, C, T> where T: Deref<Target=str> {
+impl<'a, C: CommandRunner, T> Symbol for NginxServer<'a, C, T>
+where
+  T: Deref<Target = str>,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     if !try!(self.file.target_reached()) {
       return Ok(false);
@@ -167,7 +213,9 @@ impl<'a, C: CommandRunner, T> Symbol for NginxServer<'a, C, T> where T: Deref<Ta
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     try!(self.file.execute());
-    self.command_runner.run_successfully("systemctl", &["reload-or-restart", "nginx"])
+    self
+      .command_runner
+      .run_successfully("systemctl", &["reload-or-restart", "nginx"])
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
@@ -178,12 +226,18 @@ impl<'a, C: CommandRunner, T> Symbol for NginxServer<'a, C, T> where T: Deref<Ta
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<'a, C: CommandRunner, T> fmt::Display for NginxServer<'a, C, T> where T: Deref<Target=str> {
+impl<'a, C: CommandRunner, T> fmt::Display for NginxServer<'a, C, T>
+where
+  T: Deref<Target = str>,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "Nginx server config")
   }

src/symbols/noop.rs

@@ -16,7 +16,10 @@ impl Symbol for NoopSymbol {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> where Self: 'a {
+  fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
+  where
+    Self: 'a,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
@@ -26,4 +29,3 @@ impl Display for NoopSymbol {
     write!(f, "Noop")
   }
 }
-

src/symbols/npm.rs

@@ -7,12 +7,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct NpmInstall<'a, C: 'a + CommandRunner> {
   target: &'a str,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> NpmInstall<'a, C> {
   pub fn new(target: &'a str, command_runner: &'a C) -> Self {
-    NpmInstall { target, command_runner }
+    NpmInstall {
+      target,
+      command_runner,
+    }
   }
 }
 
@@ -27,23 +30,41 @@ impl<'a, C: CommandRunner> Symbol for NpmInstall<'a, C> {
     if !Path::new(self.target).exists() {
       return Ok(false);
     }
-    let result = try!(self.command_runner.run_with_args("sh", &["-c", &format!("cd '{}' && npm ls", self.target)]));
-    Ok(result.status.success() && !String::from_utf8(result.stdout).unwrap().contains("(empty)"))
+    let result = try!(self
+      .command_runner
+      .run_with_args("sh", &["-c", &format!("cd '{}' && npm ls", self.target)]));
+    Ok(
+      result.status.success()
+        && !String::from_utf8(result.stdout)
+          .unwrap()
+          .contains("(empty)"),
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("sh", &["-c", &format!("cd '{}' && npm install --production --unsafe-perm", self.target)])
+    self.command_runner.run_successfully(
+      "sh",
+      &[
+        "-c",
+        &format!(
+          "cd '{}' && npm install --production --unsafe-perm",
+          self.target
+        ),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/owner.rs

@@ -11,19 +11,32 @@ use command_runner::CommandRunner;
 use resources::Resource;
 use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct Owner<'a, C: 'a + CommandRunner, D> where D: AsRef<str> {
+pub struct Owner<'a, C: 'a + CommandRunner, D>
+where
+  D: AsRef<str>,
+{
   path: D,
   user_name: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
-impl<'a, C: CommandRunner, D> Owner<'a, C, D> where D: AsRef<str> {
+impl<'a, C: CommandRunner, D> Owner<'a, C, D>
+where
+  D: AsRef<str>,
+{
   pub fn new(path: D, user_name: Cow<'a, str>, command_runner: &'a C) -> Self {
-    Owner { path, user_name, command_runner }
+    Owner {
+      path,
+      user_name,
+      command_runner,
+    }
   }
 }
 
-impl<'a, C: CommandRunner, D> Symbol for Owner<'a, C, D> where D: AsRef<str> {
+impl<'a, C: CommandRunner, D> Symbol for Owner<'a, C, D>
+where
+  D: AsRef<str>,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     if !Path::new(self.path.as_ref()).exists() {
       return Ok(false);
@@ -34,7 +47,10 @@ impl<'a, C: CommandRunner, D> Symbol for Owner<'a, C, D> where D: AsRef<str> {
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("chown", &["-R", self.user_name.borrow(), self.path.as_ref()])
+    self.command_runner.run_successfully(
+      "chown",
+      &["-R", self.user_name.borrow(), self.path.as_ref()],
+    )
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
@@ -45,12 +61,18 @@ impl<'a, C: CommandRunner, D> Symbol for Owner<'a, C, D> where D: AsRef<str> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<'a, C: CommandRunner, D> fmt::Display for Owner<'a, C, D> where D: AsRef<str> {
+impl<'a, C: CommandRunner, D> fmt::Display for Owner<'a, C, D>
+where
+  D: AsRef<str>,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "Owner {} for {}", self.user_name, self.path.as_ref())
   }

src/symbols/postgresql/database.rs

@@ -8,16 +8,23 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 pub struct PostgreSQLDatabase<'a, C: 'a + CommandRunner> {
   name: Cow<'a, str>,
   seed_file: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> PostgreSQLDatabase<'a, C> {
   pub fn new(name: Cow<'a, str>, seed_file: Cow<'a, str>, command_runner: &'a C) -> Self {
-    PostgreSQLDatabase { name, seed_file, command_runner }
+    PostgreSQLDatabase {
+      name,
+      seed_file,
+      command_runner,
+    }
   }
 
   fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
-    let b = try!(self.command_runner.get_output("su", &["-", "postgres", "-c", &format!("psql -t -c \"{}\"", sql)]));
+    let b = try!(self.command_runner.get_output(
+      "su",
+      &["-", "postgres", "-c", &format!("psql -t -c \"{}\"", sql)]
+    ));
     Ok(try!(String::from_utf8(b)))
   }
 }
@@ -30,24 +37,52 @@ impl<'a, C: CommandRunner> fmt::Display for PostgreSQLDatabase<'a, C> {
 
 impl<'a, C: CommandRunner> Symbol for PostgreSQLDatabase<'a, C> {
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
-    Ok(try!(self.run_sql(&format!("SELECT datname FROM pg_database WHERE datname LIKE '{}'", self.name))).trim() == self.name)
+    Ok(
+      try!(self.run_sql(&format!(
+        "SELECT datname FROM pg_database WHERE datname LIKE '{}'",
+        self.name
+      )))
+      .trim()
+        == self.name,
+    )
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("createuser {}", self.name)])?;
-    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("createdb -E UTF8 -T template0 -O {} {0}", self.name)])?;
-    self.command_runner.run_successfully("su", &["-", "postgres", "-c", &format!("psql '{}' < {}", self.name, self.seed_file)])
+    self.command_runner.run_successfully(
+      "su",
+      &["-", "postgres", "-c", &format!("createuser {}", self.name)],
+    )?;
+    self.command_runner.run_successfully(
+      "su",
+      &[
+        "-",
+        "postgres",
+        "-c",
+        &format!("createdb -E UTF8 -T template0 -O {} {0}", self.name),
+      ],
+    )?;
+    self.command_runner.run_successfully(
+      "su",
+      &[
+        "-",
+        "postgres",
+        "-c",
+        &format!("psql '{}' < {}", self.name, self.seed_file),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/postgresql/database_dump.rs

@@ -3,22 +3,33 @@ use std::fmt;
 use std::str::FromStr;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use storage::Storage;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct DatabaseDump<'a, N, C, S> where N: 'a + AsRef<str>, C: 'a + CommandRunner, S: Storage {
+pub struct DatabaseDump<'a, N, C, S>
+where
+  N: 'a + AsRef<str>,
+  C: 'a + CommandRunner,
+  S: Storage,
+{
   db_name: N,
   storage: S,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> DatabaseDump<'a, N, C, S> {
   pub fn new(db_name: N, storage: S, command_runner: &'a C) -> Self {
-    DatabaseDump { db_name, storage, command_runner }
+    DatabaseDump {
+      db_name,
+      storage,
+      command_runner,
+    }
   }
 
   fn run_sql(&self, sql: &str) -> Result<String, Box<dyn Error>> {
-    let b = try!(self.command_runner.get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
+    let b = try!(self
+      .command_runner
+      .get_output("mariadb", &["--skip-column-names", "-B", "-e", sql]));
     Ok(try!(String::from_utf8(b)))
   }
 }
@@ -33,23 +44,37 @@ impl<'a, N: AsRef<str>, C: CommandRunner, S: Storage> Symbol for DatabaseDump<'a
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let dump_date = try!(self.storage.recent_date());
     let modified_date = try!(self.run_sql(&format!("select UNIX_TIMESTAMP(MAX(UPDATE_TIME)) from information_schema.tables WHERE table_schema = '{}'", self.db_name.as_ref())));
-    if modified_date.trim_end() == "NULL" { return Ok(false); }
+    if modified_date.trim_end() == "NULL" {
+      return Ok(false);
+    }
     Ok(try!(u64::from_str(modified_date.trim_end())) <= dump_date)
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("sh", &["-c", &format!("mysqldump '{}' > {}", self.db_name.as_ref(), self.storage.write_filename())])
+    self.command_runner.run_successfully(
+      "sh",
+      &[
+        "-c",
+        &format!(
+          "mysqldump '{}' > {}",
+          self.db_name.as_ref(),
+          self.storage.write_filename()
+        ),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/stored_directory.rs

@@ -8,32 +8,52 @@ use std::str::FromStr;
 
 use command_runner::CommandRunner;
 use resources::Resource;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use storage::Storage;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 #[derive(Debug, PartialEq)]
-pub enum StorageDirection { Load, Save }
+pub enum StorageDirection {
+  Load,
+  Save,
+}
 
-pub struct StoredDirectory<'a, S, C: 'a + CommandRunner> where S: Storage {
+pub struct StoredDirectory<'a, S, C: 'a + CommandRunner>
+where
+  S: Storage,
+{
   path: Cow<'a, str>,
   storage: S,
   dir: StorageDirection,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
-impl<'a, S, C: CommandRunner> StoredDirectory<'a, S, C> where S: Storage {
+impl<'a, S, C: CommandRunner> StoredDirectory<'a, S, C>
+where
+  S: Storage,
+{
   pub fn new(path: Cow<'a, str>, storage: S, dir: StorageDirection, command_runner: &'a C) -> Self {
-    StoredDirectory { path, storage, dir, command_runner }
+    StoredDirectory {
+      path,
+      storage,
+      dir,
+      command_runner,
+    }
   }
 }
 
-impl<'a, S, C: CommandRunner> fmt::Display for StoredDirectory<'a, S, C> where S: Storage {
+impl<'a, S, C: CommandRunner> fmt::Display for StoredDirectory<'a, S, C>
+where
+  S: Storage,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     write!(f, "Stored directory {} ({:?})", self.path, self.dir)
   }
 }
 
-impl<'a, S, C: CommandRunner> Symbol for StoredDirectory<'a, S, C> where S: Storage {
+impl<'a, S, C: CommandRunner> Symbol for StoredDirectory<'a, S, C>
+where
+  S: Storage,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let metadata = fs::metadata(self.path.as_ref());
     // Check if dir exists
@@ -45,33 +65,72 @@ impl<'a, S, C: CommandRunner> Symbol for StoredDirectory<'a, S, C> where S: Stor
       };
     }
     if !metadata.unwrap().is_dir() {
-      return Err(Box::new(io::Error::new(io::ErrorKind::AlreadyExists, "Could not create a directory, non-directory file exists")));
+      return Err(Box::new(io::Error::new(
+        io::ErrorKind::AlreadyExists,
+        "Could not create a directory, non-directory file exists",
+      )));
     }
 
     let dump_date = try!(self.storage.recent_date());
-    let output = try!(self.command_runner.get_output("sh", &["-c", &format!("find {} -printf '%T@\\n' | sort -r | head -n1 | grep '^[0-9]\\+' -o", self.path)]));
+    let output = try!(self.command_runner.get_output(
+      "sh",
+      &[
+        "-c",
+        &format!(
+          "find {} -printf '%T@\\n' | sort -r | head -n1 | grep '^[0-9]\\+' -o",
+          self.path
+        )
+      ]
+    ));
     let modified_date = try!(u64::from_str(try!(String::from_utf8(output)).trim_end()));
-    if if self.dir == StorageDirection::Save { modified_date > dump_date } else { dump_date > modified_date } {
-      let output = try!(self.command_runner.run_with_args("diff", &["-rq", &try!(self.storage.read_filename()), self.path.borrow()]));
+    if if self.dir == StorageDirection::Save {
+      modified_date > dump_date
+    } else {
+      dump_date > modified_date
+    } {
+      let output = try!(self.command_runner.run_with_args(
+        "diff",
+        &[
+          "-rq",
+          &try!(self.storage.read_filename()),
+          self.path.borrow()
+        ]
+      ));
       match output.status.code() {
         Some(0) => Ok(true),
         Some(1) => Ok(false),
-        _ => Err(try!(String::from_utf8(output.stderr)).into())
+        _ => Err(try!(String::from_utf8(output.stderr)).into()),
+      }
+    } else {
+      Ok(true)
     }
-    } else { Ok(true) }
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     if self.dir == StorageDirection::Load {
-      try!(self.command_runner.run_successfully("rm", &["-rf", self.path.borrow()]));
-      self.command_runner.run_successfully("cp", &["-a", &try!(self.storage.read_filename()), self.path.borrow()])
+      try!(self
+        .command_runner
+        .run_successfully("rm", &["-rf", self.path.borrow()]));
+      self.command_runner.run_successfully(
+        "cp",
+        &[
+          "-a",
+          &try!(self.storage.read_filename()),
+          self.path.borrow(),
+        ],
+      )
     } else {
-      self.command_runner.run_successfully("cp", &["-a", self.path.borrow(), &self.storage.write_filename()])
+      self.command_runner.run_successfully(
+        "cp",
+        &["-a", self.path.borrow(), &self.storage.write_filename()],
+      )
     }
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
-    if self.dir == StorageDirection::Save { return vec![]; }
+    if self.dir == StorageDirection::Save {
+      return vec![];
+    }
     if let Some(parent) = Path::new(self.path.as_ref()).parent() {
       vec![Resource::new("dir", parent.to_string_lossy())]
     } else {
@@ -91,11 +150,13 @@ impl<'a, S, C: CommandRunner> Symbol for StoredDirectory<'a, S, C> where S: Stor
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/systemd/node_js_user_service.rs

@@ -1,22 +1,22 @@
 use std::error::Error;
 use std::fmt;
-use std::io;
 use std::fs;
+use std::io;
+use std::ops::Deref;
 use std::process::Output;
 use std::thread::sleep;
 use std::time::Duration;
-use std::ops::Deref;
 
 use command_runner::{CommandRunner, SetuidCommandRunner};
 use resources::Resource;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use symbols::file::File as FileSymbol;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 #[derive(Debug)]
 pub enum NodeJsSystemdUserServiceError<E: Error> {
   ActivationFailed(io::Result<Output>),
   ExecError(E),
-  GenericError
+  GenericError,
 }
 
 impl From<io::Error> for NodeJsSystemdUserServiceError<io::Error> {
@@ -30,13 +30,13 @@ impl<E: Error> Error for NodeJsSystemdUserServiceError<E> {
     match self {
       NodeJsSystemdUserServiceError::ExecError(ref e) => e.description(),
       NodeJsSystemdUserServiceError::GenericError => "Generic error",
-      NodeJsSystemdUserServiceError::ActivationFailed(_) => "Activation of service failed"
+      NodeJsSystemdUserServiceError::ActivationFailed(_) => "Activation of service failed",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
       NodeJsSystemdUserServiceError::ExecError(ref e) => Some(e),
-      _ => None
+      _ => None,
     }
   }
 }
@@ -51,19 +51,37 @@ impl<E: Error> fmt::Display for NodeJsSystemdUserServiceError<E> {
   }
 }
 
-pub struct NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+pub struct NodeJsSystemdUserService<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   service_name: &'a str,
   user_name: &'a str,
   command_runner: R,
-  file: FileSymbol<C, String>
+  file: FileSymbol<C, String>,
 }
 
-impl<'a, R> NodeJsSystemdUserService<'a, String, SetuidCommandRunner<'a, R>> where R: CommandRunner {
-  pub fn new(home: &'a str, user_name: &'a str, service_name: &'a str, path: &'a str, command_runner: &'a R) -> Self {
-    let file_path = format!("{}/.config/systemd/user/{}.service", home.trim_end(), service_name);
+impl<'a, R> NodeJsSystemdUserService<'a, String, SetuidCommandRunner<'a, R>>
+where
+  R: CommandRunner,
+{
+  pub fn new(
+    home: &'a str,
+    user_name: &'a str,
+    service_name: &'a str,
+    path: &'a str,
+    command_runner: &'a R,
+  ) -> Self {
+    let file_path = format!(
+      "{}/.config/systemd/user/{}.service",
+      home.trim_end(),
+      service_name
+    );
 
     let port = format!("/var/tmp/{}-{}.socket", user_name, service_name);
-    let content = format!("[Service]
+    let content = format!(
+      "[Service]
 Environment=NODE_ENV=production
 Environment=PORT={1}
 ExecStartPre=/bin/rm -f {1}
@@ -78,19 +96,24 @@ Restart=always
 
 [Install]
 WantedBy=default.target
-", path, port);
+",
+      path, port
+    );
 
     NodeJsSystemdUserService {
       service_name,
       user_name,
       command_runner: SetuidCommandRunner::new(user_name, command_runner),
-      file: FileSymbol::new(file_path, content)
+      file: FileSymbol::new(file_path, content),
     }
   }
 }
 
-impl<'a, C, R> NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
-
+impl<'a, C, R> NodeJsSystemdUserService<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   fn systemctl_wait_for_dbus(&self, args: &[&str]) -> Result<String, Box<dyn Error>> {
     let mut tries = 5;
     loop {
@@ -102,7 +125,11 @@ impl<'a, C, R> NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R:
           return Err(stderr.into());
         }
       } else {
-        return Ok(try!(String::from_utf8(result.stdout)).trim_end().to_string());
+        return Ok(
+          try!(String::from_utf8(result.stdout))
+            .trim_end()
+            .to_string(),
+        );
       }
       tries -= 1;
       if tries == 0 {
@@ -114,18 +141,36 @@ impl<'a, C, R> NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R:
 
   fn check_if_service(&self) -> Result<bool, Box<dyn Error>> {
     loop {
-      let active_state = try!(self.systemctl_wait_for_dbus(&["--user", "show", "--property", "ActiveState", self.service_name]));
+      let active_state = try!(self.systemctl_wait_for_dbus(&[
+        "--user",
+        "show",
+        "--property",
+        "ActiveState",
+        self.service_name
+      ]));
       match active_state.as_ref() {
         "ActiveState=activating" => sleep(Duration::from_millis(500)),
         "ActiveState=active" => return Ok(true),
-        "ActiveState=failed" => return Err(Box::new(NodeJsSystemdUserServiceError::ActivationFailed(self.command_runner.run_with_args("journalctl", &["--user", &format!("--user-unit={}", self.service_name)])) as NodeJsSystemdUserServiceError<io::Error>)),
-        _ => return Ok(false)
+        "ActiveState=failed" => {
+          return Err(Box::new(NodeJsSystemdUserServiceError::ActivationFailed(
+            self.command_runner.run_with_args(
+              "journalctl",
+              &["--user", &format!("--user-unit={}", self.service_name)],
+            ),
+          )
+            as NodeJsSystemdUserServiceError<io::Error>))
+        }
+        _ => return Ok(false),
       }
     }
   }
 }
 
-impl<'a, C, R> Symbol for NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+impl<'a, C, R> Symbol for NodeJsSystemdUserService<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     if !(try!(self.file.target_reached())) {
       return Ok(false);
@@ -139,15 +184,22 @@ impl<'a, C, R> Symbol for NodeJsSystemdUserService<'a, C, R> where C: Deref<Targ
     try!(self.systemctl_wait_for_dbus(&["--user", "restart", self.service_name]));
 
     if !(try!(self.check_if_service())) {
-      return Err(Box::new(NodeJsSystemdUserServiceError::GenericError as NodeJsSystemdUserServiceError<io::Error>));
+      return Err(Box::new(
+        NodeJsSystemdUserServiceError::GenericError as NodeJsSystemdUserServiceError<io::Error>,
+      ));
     }
 
     let file_name = format!("/var/tmp/{}-{}.socket", self.user_name, self.service_name);
-    fs::metadata(&file_name).map(|_| ()).map_err(|e| Box::new(e) as Box<dyn Error>)
+    fs::metadata(&file_name)
+      .map(|_| ())
+      .map_err(|e| Box::new(e) as Box<dyn Error>)
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
-    let mut r = vec![ Resource::new("file", format!("/var/lib/systemd/linger/{}", self.user_name)) ];
+    let mut r = vec![Resource::new(
+      "file",
+      format!("/var/lib/systemd/linger/{}", self.user_name),
+    )];
     r.extend(self.file.get_prerequisites().into_iter());
     r
   }
@@ -156,13 +208,24 @@ impl<'a, C, R> Symbol for NodeJsSystemdUserService<'a, C, R> where C: Deref<Targ
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<'a, C, R> fmt::Display for NodeJsSystemdUserService<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+impl<'a, C, R> fmt::Display for NodeJsSystemdUserService<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-    write!(f, "Systemd Node.js user service unit for {}", self.service_name)
+    write!(
+      f,
+      "Systemd Node.js user service unit for {}",
+      self.service_name
+    )
   }
 }

src/symbols/systemd/reload.rs

@@ -6,12 +6,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct ReloadService<'a, C: 'a + CommandRunner> {
   service: &'a str,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> ReloadService<'a, C> {
   pub fn new(service: &'a str, command_runner: &'a C) -> Self {
-    ReloadService { service, command_runner }
+    ReloadService {
+      service,
+      command_runner,
+    }
   }
 }
 
@@ -21,14 +24,19 @@ impl<'a, C: CommandRunner> Symbol for ReloadService<'a, C> {
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("systemctl", &["reload-or-restart", self.service])
+    self
+      .command_runner
+      .run_successfully("systemctl", &["reload-or-restart", self.service])
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }

src/symbols/systemd/user_session.rs

@@ -9,20 +9,20 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 #[derive(Debug)]
 pub enum SystemdUserSessionError<E: Error> {
   ExecError(E),
-  GenericError
+  GenericError,
 }
 
 impl<E: Error> Error for SystemdUserSessionError<E> {
   fn description(&self) -> &str {
     match self {
       SystemdUserSessionError::ExecError(ref e) => e.description(),
-      SystemdUserSessionError::GenericError => "Generic error"
+      SystemdUserSessionError::GenericError => "Generic error",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
       SystemdUserSessionError::ExecError(ref e) => Some(e),
-      _ => None
+      _ => None,
     }
   }
 }
@@ -35,12 +35,15 @@ impl<E: Error> fmt::Display for SystemdUserSessionError<E> {
 
 pub struct SystemdUserSession<'a, C: 'a + CommandRunner> {
   user_name: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> SystemdUserSession<'a, C> {
   pub fn new(user_name: Cow<'a, str>, command_runner: &'a C) -> Self {
-    SystemdUserSession { user_name, command_runner }
+    SystemdUserSession {
+      user_name,
+      command_runner,
+    }
   }
 }
 
@@ -53,14 +56,19 @@ impl<'a, C: CommandRunner> Symbol for SystemdUserSession<'a, C> {
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("loginctl", &["enable-linger", self.user_name.borrow()])
+    self
+      .command_runner
+      .run_successfully("loginctl", &["enable-linger", self.user_name.borrow()])
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }

src/symbols/tls/csr.rs

@@ -9,12 +9,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct TlsCsr<'a, C: 'a + CommandRunner> {
   domain: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> TlsCsr<'a, C> {
   pub fn new(domain: Cow<'a, str>, command_runner: &'a C) -> Self {
-    TlsCsr { domain, command_runner }
+    TlsCsr {
+      domain,
+      command_runner,
+    }
   }
 
   fn get_key_path(&self) -> String {
@@ -38,12 +41,28 @@ impl<'a, C: CommandRunner> Symbol for TlsCsr<'a, C> {
       return Ok(false);
     }
 
-    let output = try!(self.command_runner.get_stderr("openssl", &["req", "-in", &self.get_csr_path(), "-noout", "-verify"]));
+    let output = try!(self.command_runner.get_stderr(
+      "openssl",
+      &["req", "-in", &self.get_csr_path(), "-noout", "-verify"]
+    ));
     Ok(output == b"verify OK\n")
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    try!(self.command_runner.run_successfully("openssl", &["req", "-new", "-sha256", "-key", &self.get_key_path(), "-out", &self.get_csr_path(), "-subj", &format!("/CN={}", self.domain)]));
+    try!(self.command_runner.run_successfully(
+      "openssl",
+      &[
+        "req",
+        "-new",
+        "-sha256",
+        "-key",
+        &self.get_key_path(),
+        "-out",
+        &self.get_csr_path(),
+        "-subj",
+        &format!("/CN={}", self.domain)
+      ]
+    ));
     Ok(())
   }
 
@@ -55,11 +74,13 @@ impl<'a, C: CommandRunner> Symbol for TlsCsr<'a, C> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/tls/key.rs

@@ -8,12 +8,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct TlsKey<'a, C: 'a + CommandRunner> {
   domain: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> TlsKey<'a, C> {
   pub fn new(domain: Cow<'a, str>, command_runner: &'a C) -> Self {
-    TlsKey { domain, command_runner }
+    TlsKey {
+      domain,
+      command_runner,
+    }
   }
 
   fn get_path(&self) -> String {
@@ -37,23 +40,36 @@ impl<'a, C: CommandRunner> Symbol for TlsKey<'a, C> {
       return Ok(false);
     }
 
-    let output = try!(self.command_runner.get_output("openssl", &["rsa", "-in", &self.get_path(), "-noout", "-check", "-text"]));
+    let output = try!(self.command_runner.get_output(
+      "openssl",
+      &["rsa", "-in", &self.get_path(), "-noout", "-check", "-text"]
+    ));
     Ok(output.starts_with(&format!("Private-Key: ({} bit)\n", self.get_bytes()).as_bytes()))
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("openssl", &["genrsa", "-out", &self.get_path(), &self.get_bytes().to_string()])
+    self.command_runner.run_successfully(
+      "openssl",
+      &[
+        "genrsa",
+        "-out",
+        &self.get_path(),
+        &self.get_bytes().to_string(),
+      ],
+    )
   }
 
   fn as_action<'b>(&'b self, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/tls/self_signed_cert.rs

@@ -9,12 +9,15 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
 pub struct SelfSignedTlsCert<'a, C: 'a + CommandRunner> {
   domain: Cow<'a, str>,
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> SelfSignedTlsCert<'a, C> {
   pub fn new(domain: Cow<'a, str>, command_runner: &'a C) -> Self {
-    SelfSignedTlsCert { domain, command_runner }
+    SelfSignedTlsCert {
+      domain,
+      command_runner,
+    }
   }
 
   fn get_key_path(&self) -> String {
@@ -39,22 +42,58 @@ impl<'a, C: CommandRunner> Symbol for SelfSignedTlsCert<'a, C> {
     if !Path::new(&self.get_cert_path()).exists() {
       return Ok(false);
     }
-    let output = try!(self.command_runner.run_with_args("openssl", &["x509", "-in", &self.get_cert_path(), "-noout", "-subject", "-checkend", &(30*DAYS_IN_SECONDS).to_string()]));
+    let output = try!(self.command_runner.run_with_args(
+      "openssl",
+      &[
+        "x509",
+        "-in",
+        &self.get_cert_path(),
+        "-noout",
+        "-subject",
+        "-checkend",
+        &(30 * DAYS_IN_SECONDS).to_string()
+      ]
+    ));
     println!("{}", output.status.code().unwrap());
     match output.status.code() {
-      Some(0) => Ok(output.stdout == format!("subject=CN = {}\nCertificate will not expire\n", self.domain).as_bytes()),
-      Some(_) => if output.stdout == format!("subject=CN = {}\nCertificate will expire\n", self.domain).as_bytes() {
+      Some(0) => Ok(
+        output.stdout
+          == format!(
+            "subject=CN = {}\nCertificate will not expire\n",
+            self.domain
+          )
+          .as_bytes(),
+      ),
+      Some(_) => {
+        if output.stdout
+          == format!("subject=CN = {}\nCertificate will expire\n", self.domain).as_bytes()
+        {
           Ok(false)
         } else {
           Err("Exit code non-zero, but wrong stdout".to_string().into())
-      },
-      _ => Err("Apparently killed by signal".to_string().into())
         }
-
+      }
+      _ => Err("Apparently killed by signal".to_string().into()),
+    }
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.command_runner.run_successfully("openssl", &["req", "-x509", "-sha256", "-days", "90", "-key", &self.get_key_path(), "-out", &self.get_cert_path(), "-subj", &format!("/CN={}", self.domain)])
+    self.command_runner.run_successfully(
+      "openssl",
+      &[
+        "req",
+        "-x509",
+        "-sha256",
+        "-days",
+        "90",
+        "-key",
+        &self.get_key_path(),
+        "-out",
+        &self.get_cert_path(),
+        "-subj",
+        &format!("/CN={}", self.domain),
+      ],
+    )
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
@@ -65,11 +104,13 @@ println!("{}", output.status.code().unwrap());
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 #[cfg(test)]
-mod test {
-}
+mod test {}

src/symbols/user.rs

@@ -10,7 +10,7 @@ use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 pub enum UserAdderError {
   AlreadyExists,
   UnknownError,
-  ImplError(Box<dyn Error>)
+  ImplError(Box<dyn Error>),
 }
 
 impl Error for UserAdderError {
@@ -18,13 +18,13 @@ impl Error for UserAdderError {
     match self {
       UserAdderError::AlreadyExists => "User already exists",
       UserAdderError::UnknownError => "Unknown error",
-      UserAdderError::ImplError(_) => "User adding error"
+      UserAdderError::ImplError(_) => "User adding error",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
       UserAdderError::ImplError(ref e) => Some(e.as_ref()),
-      _ => None
+      _ => None,
     }
   }
 }
@@ -33,7 +33,7 @@ impl fmt::Display for UserAdderError {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     match self.cause() {
       Some(e) => write!(f, "{} (cause: {})", self.description(), e),
-      None => write!(f, "{}", self.description())
+      None => write!(f, "{}", self.description()),
     }
   }
 }
@@ -44,18 +44,18 @@ pub trait UserAdder {
 
 #[derive(Debug, PartialEq)]
 pub enum UserError {
-  GenericError
+  GenericError,
 }
 
 impl Error for UserError {
   fn description(&self) -> &str {
     match self {
-      UserError::GenericError => "Could not find out if user exists"
+      UserError::GenericError => "Could not find out if user exists",
     }
   }
   fn cause(&self) -> Option<&dyn Error> {
     match self {
-      _ => None
+      _ => None,
     }
   }
 }
@@ -64,7 +64,7 @@ impl fmt::Display for UserError {
   fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     match self.cause() {
       Some(e) => write!(f, "{} (cause: {})", self.description(), e),
-      None => write!(f, "{}", self.description())
+      None => write!(f, "{}", self.description()),
     }
   }
 }
@@ -72,12 +72,16 @@ impl fmt::Display for UserError {
 pub struct User<'a, C: 'a + CommandRunner, A: 'a + UserAdder> {
   user_name: Cow<'a, str>,
   command_runner: &'a C,
-  user_adder: &'a A
+  user_adder: &'a A,
 }
 
 impl<'a, C: CommandRunner, A: 'a + UserAdder> User<'a, C, A> {
   pub fn new(user_name: Cow<'a, str>, command_runner: &'a C, user_adder: &'a A) -> Self {
-    User { user_name, command_runner, user_adder }
+    User {
+      user_name,
+      command_runner,
+      user_adder,
+    }
   }
 }
 
@@ -89,16 +93,21 @@ impl<'a, C: CommandRunner, A: 'a + UserAdder> fmt::Display for User<'a, C, A> {
 
 impl<'a, C: CommandRunner, A: 'a + UserAdder> Symbol for User<'a, C, A> {
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
-    let output = try!(self.command_runner.run_with_args("getent", &["passwd", &*self.user_name]));
+    let output = try!(self
+      .command_runner
+      .run_with_args("getent", &["passwd", &*self.user_name]));
     match output.status.code() {
       Some(2) => Ok(false),
       Some(0) => Ok(true),
-      _ => Err(Box::new(UserError::GenericError))
+      _ => Err(Box::new(UserError::GenericError)),
     }
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
-    self.user_adder.add_user(&*self.user_name).map_err(|e| Box::new(e) as Box<dyn Error>)
+    self
+      .user_adder
+      .add_user(&*self.user_name)
+      .map_err(|e| Box::new(e) as Box<dyn Error>)
   }
 
   fn provides(&self) -> Option<Vec<Resource>> {
@@ -109,13 +118,16 @@ impl<'a, C: CommandRunner, A: 'a + UserAdder> Symbol for User<'a, C, A> {
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
 pub struct SystemUserAdder<'a, C: 'a + CommandRunner> {
-  command_runner: &'a C
+  command_runner: &'a C,
 }
 
 impl<'a, C: CommandRunner> SystemUserAdder<'a, C> {
@@ -130,27 +142,26 @@ impl<'a, C: CommandRunner> UserAdder for SystemUserAdder<'a, C> {
       "adduser",
       &[
         // "-m", // Necessary for Fedora, not accepted in Debian
-        "--system",
-        user_name
-      ]);
+        "--system", user_name,
+      ],
+    );
     match output {
       Ok(output) => match output.status.code() {
         Some(0) => Ok(()),
-        Some(1) =>
-{
+        Some(1) => {
           println!("{:?}", output);
-Err(UserAdderError::AlreadyExists)},
-        Some(_) =>
-{
+          Err(UserAdderError::AlreadyExists)
+        }
+        Some(_) => {
           println!("{:?}", output);
           Err(UserAdderError::UnknownError)
-},
+        }
         None => {
           println!("{:?}", output);
           Err(UserAdderError::UnknownError)
+        }
       },
-      },
-      Err(e) => Err(UserAdderError::ImplError(Box::new(e)))
+      Err(e) => Err(UserAdderError::ImplError(Box::new(e))),
     }
   }
 }
@@ -161,10 +172,10 @@ mod test {
   use std::fmt;
 
   use command_runner::StdCommandRunner;
-  use symbols::Symbol;
   use symbols::user::User;
   use symbols::user::UserAdder;
   use symbols::user::UserAdderError;
+  use symbols::Symbol;
 
   #[derive(Debug, PartialEq)]
   struct DummyError;
@@ -190,13 +201,21 @@ mod test {
 
   #[test]
   fn test_target_reached_nonexisting() {
-    let symbol = User { user_name: "nonexisting".into(), command_runner: &StdCommandRunner, user_adder: &DummyUserAdder };
+    let symbol = User {
+      user_name: "nonexisting".into(),
+      command_runner: &StdCommandRunner,
+      user_adder: &DummyUserAdder,
+    };
     assert_eq!(symbol.target_reached().unwrap(), false);
   }
 
   #[test]
   fn test_target_reached_root() {
-    let symbol = User { user_name: "root".into(), command_runner: &StdCommandRunner, user_adder: &DummyUserAdder };
+    let symbol = User {
+      user_name: "root".into(),
+      command_runner: &StdCommandRunner,
+      user_adder: &DummyUserAdder,
+    };
     assert_eq!(symbol.target_reached().unwrap(), true);
   }
 }

src/symbols/wordpress/plugin.rs

@@ -8,26 +8,44 @@ use std::ops::Deref;
 use std::path::{Path, PathBuf};
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use resources::Resource;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct WordpressPlugin<'a, C, R> where C: Deref<Target=str>, R: 'a + CommandRunner {
+pub struct WordpressPlugin<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: 'a + CommandRunner,
+{
   base: C,
   name: C,
-  command_runner: &'a R
+  command_runner: &'a R,
 }
 
-impl<'a, C, R> WordpressPlugin<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+impl<'a, C, R> WordpressPlugin<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   pub fn new(base: C, name: C, command_runner: &'a R) -> Self {
-    WordpressPlugin { base, name, command_runner }
+    WordpressPlugin {
+      base,
+      name,
+      command_runner,
+    }
   }
 
   fn get_path(&self) -> PathBuf {
-    Path::new(&*self.base).join("wp-content/plugins").join(&*self.name)
+    Path::new(&*self.base)
+      .join("wp-content/plugins")
+      .join(&*self.name)
   }
 }
 
-impl<'a, C, R> Symbol for WordpressPlugin<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+impl<'a, C, R> Symbol for WordpressPlugin<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     if !self.get_path().exists() {
       return Ok(false);
@@ -43,7 +61,7 @@ impl<'a, C, R> Symbol for WordpressPlugin<'a, C, R> where C: Deref<Target=str>,
         } else {
           Err(Box::new(e))
         };
-      },
+      }
       Ok(file) => {
         let reader = BufReader::new(file);
         let regex = Regex::new("(?m)^(Plugin URI|Version): (.+)$")?;
@@ -58,22 +76,45 @@ impl<'a, C, R> Symbol for WordpressPlugin<'a, C, R> where C: Deref<Target=str>,
         }
       }
     }
-    let upstream = try!(self.command_runner.get_output("curl", &["--form", &format!(r###"plugins={{"plugins":{{"{0}/{0}.php":{{"Version":"{1}", "PluginURI":"{2}"}}}}}}"###, &*self.name, version, plugin_uri), "https://api.wordpress.org/plugins/update-check/1.1/"]));
+    let upstream = try!(self.command_runner.get_output(
+      "curl",
+      &[
+        "--form",
+        &format!(
+          r###"plugins={{"plugins":{{"{0}/{0}.php":{{"Version":"{1}", "PluginURI":"{2}"}}}}}}"###,
+          &*self.name, version, plugin_uri
+        ),
+        "https://api.wordpress.org/plugins/update-check/1.1/"
+      ]
+    ));
     Ok(try!(String::from_utf8(upstream)).contains(r###""plugins":[]"###))
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     let source = format!("https://downloads.wordpress.org/plugin/{}.zip", &*self.name);
     let zip = format!("/tmp/{}.zip", &*self.name);
-    try!(self.command_runner.run_successfully("curl", &[source.as_ref() as &str, "-o", zip.as_ref()]));
-    try!(self.command_runner.run_successfully("rm", &["-rf", &self.get_path().to_string_lossy()]));
-    self.command_runner.run_successfully("unzip", &[zip.as_ref(), "-d".as_ref(), Path::new(&*self.base).join("wp-content/plugins").as_os_str()])
+    try!(self
+      .command_runner
+      .run_successfully("curl", &[source.as_ref() as &str, "-o", zip.as_ref()]));
+    try!(self
+      .command_runner
+      .run_successfully("rm", &["-rf", &self.get_path().to_string_lossy()]));
+    self.command_runner.run_successfully(
+      "unzip",
+      &[
+        zip.as_ref(),
+        "-d".as_ref(),
+        Path::new(&*self.base)
+          .join("wp-content/plugins")
+          .as_os_str(),
+      ],
+    )
   }
 
   fn get_prerequisites(&self) -> Vec<Resource> {
     match self.get_path().parent() {
       Some(p) => vec![Resource::new("dir", p.to_string_lossy())],
-      None => vec![]
+      None => vec![],
     }
   }
 
@@ -81,14 +122,20 @@ impl<'a, C, R> Symbol for WordpressPlugin<'a, C, R> where C: Deref<Target=str>,
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<'a, C, R> fmt::Display for WordpressPlugin<'a, C, R> where C: Deref<Target=str>, R: CommandRunner {
+impl<'a, C, R> fmt::Display for WordpressPlugin<'a, C, R>
+where
+  C: Deref<Target = str>,
+  R: CommandRunner,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "WordpressPlugin {}", &*self.name)
   }
 }
-

src/symbols/wordpress/translation.rs

@@ -8,34 +8,66 @@ use std::io::{BufRead, BufReader};
 use std::path::Path;
 
 use command_runner::CommandRunner;
-use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 use resources::Resource;
+use symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
 
-pub struct WordpressTranslation<'a, C, D, R> where C: AsRef<str>, D: AsRef<str>, R: 'a + CommandRunner {
+pub struct WordpressTranslation<'a, C, D, R>
+where
+  C: AsRef<str>,
+  D: AsRef<str>,
+  R: 'a + CommandRunner,
+{
   path: D,
   version: &'a str,
   locale: C,
-  command_runner: &'a R
+  command_runner: &'a R,
 }
 
-impl<'a, C, R> WordpressTranslation<'a, C, String, R> where C: AsRef<str>, R: CommandRunner {
+impl<'a, C, R> WordpressTranslation<'a, C, String, R>
+where
+  C: AsRef<str>,
+  R: CommandRunner,
+{
   pub fn new<D: AsRef<str>>(path: D, version: &'a str, locale: C, command_runner: &'a R) -> Self {
     WordpressTranslation {
-      path: Path::new(path.as_ref()).join("wp-content/languages").to_string_lossy().to_string(),
+      path: Path::new(path.as_ref())
+        .join("wp-content/languages")
+        .to_string_lossy()
+        .to_string(),
       version,
       locale,
-      command_runner
+      command_runner,
     }
   }
 }
 
-impl<'a, C, D, R> WordpressTranslation<'a, C, D, R> where C: AsRef<str>, D: AsRef<str>, R: CommandRunner {
+impl<'a, C, D, R> WordpressTranslation<'a, C, D, R>
+where
+  C: AsRef<str>,
+  D: AsRef<str>,
+  R: CommandRunner,
+{
   fn get_pairs(&self) -> Vec<(String, String)> {
-    let version_x = self.version.trim_end_matches(|c: char| c.is_digit(10)).to_owned() + "x";
+    let version_x = self
+      .version
+      .trim_end_matches(|c: char| c.is_digit(10))
+      .to_owned()
+      + "x";
     let locale: &str = self.locale.as_ref();
-    let path_locale = if locale == "de_DE" { "de".to_owned() } else { locale.to_lowercase().replace('_', "-") };
+    let path_locale = if locale == "de_DE" {
+      "de".to_owned()
+    } else {
+      locale.to_lowercase().replace('_', "-")
+    };
     let mut res = vec![];
-    for &(in_slug, out_slug) in [("", ""), ("cc/", "continents-cities-"), ("admin/", "admin-"), ("admin/network/", "admin-network-")].iter() {
+    for &(in_slug, out_slug) in [
+      ("", ""),
+      ("cc/", "continents-cities-"),
+      ("admin/", "admin-"),
+      ("admin/network/", "admin-network-"),
+    ]
+    .iter()
+    {
       for format in ["po", "mo"].iter() {
         res.push((
           format!("https://translate.wordpress.org/projects/wp/{}/{}{}/default/export-translations?format={}", version_x, in_slug, path_locale, format),
@@ -47,7 +79,12 @@ impl<'a, C, D, R> WordpressTranslation<'a, C, D, R> where C: AsRef<str>, D: AsRe
   }
 }
 
-impl<'a, C, D, R> Symbol for WordpressTranslation<'a, C, D, R> where C: AsRef<str>, D: AsRef<str>, R: CommandRunner {
+impl<'a, C, D, R> Symbol for WordpressTranslation<'a, C, D, R>
+where
+  C: AsRef<str>,
+  D: AsRef<str>,
+  R: CommandRunner,
+{
   fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let mut newest = String::new();
     let match_date = Regex::new("(?m)^\"PO-Revision-Date: (.+)\\+0000\\\\n\"$").unwrap();
@@ -60,8 +97,9 @@ impl<'a, C, D, R> Symbol for WordpressTranslation<'a, C, D, R> where C: AsRef<st
           } else {
             Err(Box::new(e))
           };
-        },
-        Ok(file) => if target.ends_with(".po") {
+        }
+        Ok(file) => {
+          if target.ends_with(".po") {
             let reader = BufReader::new(file);
             for content in reader.lines() {
               if let Some(match_result) = match_date.captures(&try!(content)) {
@@ -72,13 +110,28 @@ impl<'a, C, D, R> Symbol for WordpressTranslation<'a, C, D, R> where C: AsRef<st
           }
         }
       }
-    let upstream = try!(self.command_runner.get_output("curl", &[&format!("https://api.wordpress.org/core/version-check/1.7/?version={}&locale={}", self.version, self.locale.as_ref())]));
-    Ok(try!(String::from_utf8(upstream)).contains(&format!(r###"language":"{}","version":"{}","updated":"{}"###, self.locale.as_ref(), self.version, newest)))
+    }
+    let upstream = try!(self.command_runner.get_output(
+      "curl",
+      &[&format!(
+        "https://api.wordpress.org/core/version-check/1.7/?version={}&locale={}",
+        self.version,
+        self.locale.as_ref()
+      )]
+    ));
+    Ok(try!(String::from_utf8(upstream)).contains(&format!(
+      r###"language":"{}","version":"{}","updated":"{}"###,
+      self.locale.as_ref(),
+      self.version,
+      newest
+    )))
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {
     for (source, target) in self.get_pairs() {
-      try!(self.command_runner.run_successfully("curl", &["--compressed", "-o", &target, &source]));
+      try!(self
+        .command_runner
+        .run_successfully("curl", &["--compressed", "-o", &target, &source]));
     }
     Ok(())
   }
@@ -91,14 +144,21 @@ impl<'a, C, D, R> Symbol for WordpressTranslation<'a, C, D, R> where C: AsRef<st
     Box::new(SymbolAction::new(runner, self))
   }
 
-  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b> where Self: 'b {
+  fn into_action<'b>(self: Box<Self>, runner: &'b dyn SymbolRunner) -> Box<dyn Action + 'b>
+  where
+    Self: 'b,
+  {
     Box::new(OwnedSymbolAction::new(runner, *self))
   }
 }
 
-impl<'a, C, D, R> fmt::Display for WordpressTranslation<'a, C, D, R> where C: AsRef<str>, D: AsRef<str>, R: CommandRunner {
+impl<'a, C, D, R> fmt::Display for WordpressTranslation<'a, C, D, R>
+where
+  C: AsRef<str>,
+  D: AsRef<str>,
+  R: CommandRunner,
+{
   fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
     write!(f, "WordpressTranslation {}", self.path.as_ref())
   }
 }
-

tests/file.rs

@@ -1,12 +1,12 @@
 extern crate schematics;
 extern crate tempdir;
 
+use schematics::symbols::file::File as FileSymbol;
+use schematics::symbols::Symbol;
 use std::fs::File;
 use std::io::Write;
 use std::path::Path;
 use tempdir::TempDir;
-use schematics::symbols::Symbol;
-use schematics::symbols::file::File as FileSymbol;
 
 fn get_dir(content: Option<&str>) -> TempDir {
   let tmp_dir = TempDir::new("unittest").expect("create temp dir");
@@ -15,12 +15,17 @@ fn get_dir(content: Option<&str>) -> TempDir {
   }
   let file_path = tmp_dir.path().join("filename");
   let mut tmp_file = File::create(file_path).expect("create temp file");
-  tmp_file.write_all(content.unwrap().as_bytes()).expect("write temp file");
+  tmp_file
+    .write_all(content.unwrap().as_bytes())
+    .expect("write temp file");
   tmp_dir
 }
 
 fn get_symbol(path: &Path) -> FileSymbol<&str, String> {
-  FileSymbol::new(String::from(path.join("filename").to_str().unwrap()), "target content")
+  FileSymbol::new(
+    String::from(path.join("filename").to_str().unwrap()),
+    "target content",
+  )
 }
 
 // Normal cases

tests/storage.rs

@@ -3,10 +3,10 @@ extern crate schematics;
 extern crate tempdir;
 
 use regex::Regex;
+use schematics::storage::{SimpleStorage, Storage};
 use std::fs::{create_dir, File};
 use std::path::Path;
 use tempdir::TempDir;
-use schematics::storage::{SimpleStorage, Storage};
 
 fn get_dir<'a, I: IntoIterator<Item = &'a &'a str>>(content: I) -> TempDir {
   let tmp_dir = TempDir::new("unittest").expect("create temp dir");
@@ -30,8 +30,15 @@ fn single_file() {
   let dir = get_dir(&["12345"]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
-  assert_eq!(dir.path().join("_filename").join("12345"), Path::new(&storage.read_filename().unwrap()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
+  assert_eq!(
+    dir.path().join("_filename").join("12345"),
+    Path::new(&storage.read_filename().unwrap())
+  );
   assert_eq!(storage.recent_date().unwrap(), 12345);
 }
 
@@ -40,8 +47,15 @@ fn two_files() {
   let dir = get_dir(&["12345", "23456"]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
-  assert_eq!(dir.path().join("_filename").join("23456"), Path::new(&storage.read_filename().unwrap()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
+  assert_eq!(
+    dir.path().join("_filename").join("23456"),
+    Path::new(&storage.read_filename().unwrap())
+  );
   assert_eq!(storage.recent_date().unwrap(), 23456);
 }
 
@@ -50,8 +64,15 @@ fn another_two_files() {
   let dir = get_dir(&["23456", "12345"]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
-  assert_eq!(dir.path().join("_filename").join("23456"), Path::new(&storage.read_filename().unwrap()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
+  assert_eq!(
+    dir.path().join("_filename").join("23456"),
+    Path::new(&storage.read_filename().unwrap())
+  );
   assert_eq!(storage.recent_date().unwrap(), 23456);
 }
 
@@ -60,8 +81,15 @@ fn three_files() {
   let dir = get_dir(&["23456", "9", "12345"]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
-  assert_eq!(dir.path().join("_filename").join("23456"), Path::new(&storage.read_filename().unwrap()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
+  assert_eq!(
+    dir.path().join("_filename").join("23456"),
+    Path::new(&storage.read_filename().unwrap())
+  );
   assert_eq!(storage.recent_date().unwrap(), 23456);
 }
 
@@ -72,11 +100,21 @@ fn empty_storage() {
   let dir = TempDir::new("unittest").expect("create temp dir");
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
   assert!(storage.read_filename().is_err());
-  assert_eq!(storage.read_filename().unwrap_err().description(), "entity not found");
+  assert_eq!(
+    storage.read_filename().unwrap_err().description(),
+    "entity not found"
+  );
   assert!(storage.recent_date().is_err());
-  assert_eq!(storage.recent_date().unwrap_err().description(), "entity not found");
+  assert_eq!(
+    storage.recent_date().unwrap_err().description(),
+    "entity not found"
+  );
 }
 
 #[test]
@@ -84,11 +122,21 @@ fn empty_storage_for_filename() {
   let dir = get_dir(&[]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
   assert!(storage.read_filename().is_err());
-  assert_eq!(storage.read_filename().unwrap_err().description(), "Not found");
+  assert_eq!(
+    storage.read_filename().unwrap_err().description(),
+    "Not found"
+  );
   assert!(storage.recent_date().is_err());
-  assert_eq!(storage.recent_date().unwrap_err().description(), "Not found");
+  assert_eq!(
+    storage.recent_date().unwrap_err().description(),
+    "Not found"
+  );
 }
 
 #[test]
@@ -96,9 +144,19 @@ fn bad_file() {
   let dir = get_dir(&["abba"]);
   let storage = get_storage(dir.path());
 
-  assert!(Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display())).unwrap().is_match(&storage.write_filename()));
+  assert!(
+    Regex::new(&format!("^{}/_filename/\\d+$", dir.path().display()))
+      .unwrap()
+      .is_match(&storage.write_filename())
+  );
   assert!(storage.read_filename().is_err());
-  assert_eq!(storage.read_filename().unwrap_err().description(), "Not found");
+  assert_eq!(
+    storage.read_filename().unwrap_err().description(),
+    "Not found"
+  );
   assert!(storage.recent_date().is_err());
-  assert_eq!(storage.recent_date().unwrap_err().description(), "Not found");
+  assert_eq!(
+    storage.recent_date().unwrap_err().description(),
+    "Not found"
+  );
 }