Streamline command runner a bit

src/command_runner.rs

@@ -29,7 +29,7 @@ pub fn is_success(res: Result<Output, impl Error + 'static>) -> Result<Output, B
   check_success(res?)
 }
 
-pub fn get_output(output: Output) -> Result<Vec<u8>, Box<dyn Error>> {
+pub fn get_stdout(output: Output) -> Result<Vec<u8>, Box<dyn Error>> {
   Ok(check_success(output)?.stdout)
 }
 
@@ -55,7 +55,7 @@ pub trait CommandRunner {
     args: &'a [&'a OsStr],
   ) -> Result<Vec<u8>, Box<dyn Error>> {
     let output = self.run_with_args(program, args).await?;
-    get_output(output)
+    get_stdout(output)
   }
   async fn run_successfully<'a>(
     &self,

src/symbols/cron.rs

@@ -37,7 +37,7 @@ impl<C: AsRef<[u8]>, U: AsRef<str>, R: CommandRunner> Symbol for Cron<'_, C, U,
         .run(
           "crontab",
           args!["-u", self.user.as_ref(), "-",],
-          self.content.as_ref(),
+          self.content.as_ref(), // input
         )
         .await,
     )?;