diff --git a/src/builder.rs b/src/builder.rs
index 8cfa7e7..9ec4fb1 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -33,7 +33,9 @@ use crate::symbols::wordpress::{
   Plugin as WordpressPluginSymbol, Translation as WordpressTranslationSymbol,
 };
 use crate::templates::nginx;
-use crate::templates::php::{fpm_pool_config as php_fpm_pool_config, FpmPoolConfig as PhpFpmPoolConfig};
+use crate::templates::php::{
+  fpm_pool_config as php_fpm_pool_config, FpmPoolConfig as PhpFpmPoolConfig,
+};
 use crate::templates::systemd::{
   nodejs_service as systemd_nodejs_service, socket_service as systemd_socket_service,
 };
@@ -250,7 +252,9 @@ impl<D: AsRef<str> + Clone + Display> ImplementationBuilder<ServeCustom<D>> for
   }
 }
 
-impl<D: Clone + Display, P: AsRef<Path>, C: Clone + Into<PhpFpmPoolConfig>> ImplementationBuilder<ServePhp<D, P, C>> for DefaultBuilder {
+impl<D: Clone + Display, P: AsRef<Path>, C: Clone + Into<PhpFpmPoolConfig>>
+  ImplementationBuilder<ServePhp<D, P, C>> for DefaultBuilder
+{
   type Prerequisites = (
     PhpFpmPool<D>,
     CertChain<D>,
@@ -786,6 +790,6 @@ impl<D: Clone> ImplementationBuilder<Cron<D>> for DefaultBuilder {
     (): &<Cron<D> as Resource>::Artifact,
     user_name: <Self::Prerequisites as ToArtifact>::Artifact,
   ) -> Self::Implementation {
-    CronSymbol::new((user_name.0).0, resource.1.clone(), &StdCommandRunner)
+    CronSymbol::new((user_name.0).0, &resource.1, &StdCommandRunner)
   }
 }
diff --git a/src/command_runner.rs b/src/command_runner.rs
index 5f37ca1..5be8ddc 100644
--- a/src/command_runner.rs
+++ b/src/command_runner.rs
@@ -33,17 +33,17 @@ pub fn get_output(output: Output) -> Result<Vec<u8>, Box<dyn Error>> {
 
 #[async_trait(?Send)]
 pub trait CommandRunner {
-  async fn run(&self, program: &str, args: &[&OsStr], stdin: &str) -> IoResult<Output>;
+  async fn run(&self, program: &str, args: &[&OsStr], stdin: &[u8]) -> IoResult<Output>;
 
   async fn run_with_args(&self, program: &str, args: &[&OsStr]) -> IoResult<Output> {
-    self.run(program, args, "").await
+    self.run(program, args, b"").await
   }
   async fn get_output(&self, program: &str, args: &[&OsStr]) -> Result<Vec<u8>, Box<dyn Error>> {
     let output = self.run_with_args(program, args).await?;
     get_output(output)
   }
   async fn run_successfully(&self, program: &str, args: &[&OsStr]) -> Result<(), Box<dyn Error>> {
-    is_success(self.run(program, args, "").await)?;
+    is_success(self.run(program, args, b"").await)?;
     Ok(())
   }
   async fn get_stderr(&self, program: &str, args: &[&OsStr]) -> Result<Vec<u8>, Box<dyn Error>> {
@@ -56,7 +56,7 @@ pub struct StdCommandRunner;
 
 #[async_trait(?Send)]
 impl CommandRunner for StdCommandRunner {
-  async fn run(&self, program: &str, args: &[&OsStr], input: &str) -> IoResult<Output> {
+  async fn run(&self, program: &str, args: &[&OsStr], input: &[u8]) -> IoResult<Output> {
     //println!("{} {:?}", program, args);
     let mut child = Command::new(program)
       .args(args)
@@ -67,7 +67,7 @@ impl CommandRunner for StdCommandRunner {
       .expect("Failed to spawn child process");
     let stdin = child.stdin.as_mut().expect("Failed to open stdin");
     stdin
-      .write_all(input.as_bytes())
+      .write_all(input)
       .await
       .expect("Failed to write to stdin");
     let res = child.wait_with_output().await;
@@ -122,7 +122,7 @@ impl Drop for TempSetEnv<'_> {
 
 #[async_trait(?Send)]
 impl<U: AsRef<str>, C: CommandRunner> CommandRunner for SetuidCommandRunner<'_, U, C> {
-  async fn run(&self, program: &str, args: &[&OsStr], input: &str) -> IoResult<Output> {
+  async fn run(&self, program: &str, args: &[&OsStr], input: &[u8]) -> IoResult<Output> {
     let uid = get_user_by_name(self.user_name.as_ref())
       .expect("User does not exist")
       .uid();
@@ -140,7 +140,7 @@ impl<U: AsRef<str>, C: CommandRunner> CommandRunner for SetuidCommandRunner<'_,
       .expect("Failed to spawn child process");
     let stdin = child.stdin.as_mut().expect("Failed to open stdin");
     stdin
-      .write_all(input.as_bytes())
+      .write_all(input)
       .await
       .expect("Failed to write to stdin");
     let res = child.wait_with_output().await;
@@ -179,7 +179,7 @@ impl<'a, C> CommandRunner for SuCommandRunner<'a, C>
 where
   C: 'a + CommandRunner,
 {
-  async fn run(&self, program: &str, args: &[&OsStr], input: &str) -> IoResult<Output> {
+  async fn run(&self, program: &str, args: &[&OsStr], input: &[u8]) -> 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(AsRef::as_ref).collect();
     new_args.extend_from_slice(args);
@@ -201,8 +201,8 @@ mod test {
     run(async {
       let args = args!["1"];
       let start = Instant::now();
-      let res = c.run("sleep", args, "").fuse();
-      let ps = c.run("ps", args![], "").fuse();
+      let res = c.run("sleep", args, b"").fuse();
+      let ps = c.run("ps", args![], b"").fuse();
       futures_util::pin_mut!(res, ps);
       loop {
         futures_util::select! {
diff --git a/src/locator.rs b/src/locator.rs
index 6633d4e..2b0561c 100644
--- a/src/locator.rs
+++ b/src/locator.rs
@@ -302,7 +302,10 @@ impl<D: AsRef<Path>, P, C, POLICY> ResourceLocator<ServePhp<D, P, C>> for Defaul
   type Prerequisites = ();
   fn locate(
     resource: &ServePhp<D, P, C>,
-  ) -> (<ServePhp<D, P, C> as Resource>::Artifact, Self::Prerequisites) {
+  ) -> (
+    <ServePhp<D, P, C> as Resource>::Artifact,
+    Self::Prerequisites,
+  ) {
     (
       PathArtifact::from(Path::new("/etc/nginx/sites-enabled/").join(&resource.0)),
       (),
diff --git a/src/resources/mod.rs b/src/resources/mod.rs
index d8837f5..9b16405 100644
--- a/src/resources/mod.rs
+++ b/src/resources/mod.rs
@@ -147,13 +147,7 @@ impl<D> Resource for ServeCustom<D> {
 }
 
 #[derive(Debug, Hash, PartialEq, Eq)]
-pub struct ServePhp<D, P, C>(
-  pub D,
-  pub P,
-  pub &'static str,
-  pub String,
-  pub C,
-);
+pub struct ServePhp<D, P, C>(pub D, pub P, pub &'static str, pub String, pub C);
 impl<D, P, C> Resource for ServePhp<D, P, C> {
   type Artifact = PathArtifact;
 }
@@ -319,7 +313,18 @@ default_resources!(
   WordpressTranslation: WordpressTranslation<PathBuf>,
 );
 
-pub fn serve_php<D, P: Into<PathBuf>, C: Into<FpmPoolConfig>>(domain: D, path: P, root_filename: &'static str, nginx_config: impl Into<String>, pool_config: C) -> ServePhp<D, PathBuf, FpmPoolConfig> {
+pub fn serve_php<D, P: Into<PathBuf>, C: Into<FpmPoolConfig>>(
+  domain: D,
+  path: P,
+  root_filename: &'static str,
+  nginx_config: impl Into<String>,
+  pool_config: C,
+) -> ServePhp<D, PathBuf, FpmPoolConfig> {
   ServePhp(
-    domain, path.into(), root_filename, nginx_config.into(), pool_config.into())
+    domain,
+    path.into(),
+    root_filename,
+    nginx_config.into(),
+    pool_config.into(),
+  )
 }
diff --git a/src/symbols/cron.rs b/src/symbols/cron.rs
index 2a452ce..45571ed 100644
--- a/src/symbols/cron.rs
+++ b/src/symbols/cron.rs
@@ -21,13 +21,13 @@ impl<'r, U, R> Cron<'r, String, U, R> {
 }
 
 #[async_trait(?Send)]
-impl<C: AsRef<str>, U: AsRef<str>, R: CommandRunner> Symbol for Cron<'_, C, U, R> {
+impl<C: AsRef<[u8]>, U: AsRef<str>, R: CommandRunner> Symbol for Cron<'_, C, U, R> {
   async fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
     let tab = self
       .command_runner
       .get_output("crontab", args!["-l", "-u", self.user.as_ref()])
       .await?;
-    Ok(tab == self.content.as_ref().as_bytes())
+    Ok(tab == self.content.as_ref())
   }
 
   async fn execute(&self) -> Result<(), Box<dyn Error>> {
diff --git a/src/symbols/git/checkout.rs b/src/symbols/git/checkout.rs
index 4063aa9..f5399c7 100644
--- a/src/symbols/git/checkout.rs
+++ b/src/symbols/git/checkout.rs
@@ -110,9 +110,9 @@ mod test {
   }
   #[async_trait(?Send)]
   impl CommandRunner for DummyCommandRunner {
-    async fn run(&self, program: &str, args: &[&OsStr], stdin: &str) -> IoResult<Output> {
+    async fn run(&self, program: &str, args: &[&OsStr], stdin: &[u8]) -> IoResult<Output> {
       assert_eq!(program, "git");
-      assert_eq!(stdin, "");
+      assert_eq!(stdin, b"");
       sleep(Duration::from_millis(50)).await;
       self
         .args
diff --git a/src/templates/php.rs b/src/templates/php.rs
index d131fe2..7bd7695 100644
--- a/src/templates/php.rs
+++ b/src/templates/php.rs
@@ -27,7 +27,10 @@ impl From<usize> for FpmPoolConfig {
 
 impl FpmPoolConfig {
   pub fn new(max_children: usize, custom: impl Into<String>) -> Self {
-    Self { max_children, custom: Some(custom.into()) }
+    Self {
+      max_children,
+      custom: Some(custom.into()),
+    }
   }
 }