Fix clippy suggestions

.github/workflows/CICD.yml

@@ -1,7 +1,7 @@
 name: CICD
 
 env:
-  MIN_SUPPORTED_RUST_VERSION: "1.54.0"
+  MIN_SUPPORTED_RUST_VERSION: "1.57.0"
   CICD_INTERMEDIATES_DIR: "_cicd-intermediates"
 
 on:

README.md

@@ -208,7 +208,7 @@ Hyperfine can be installed from source via [cargo](https://doc.rust-lang.org/car
 cargo install hyperfine
 ```
 
-Make sure that you use Rust 1.54 or higher.
+Make sure that you use Rust 1.57 or higher.
 
 ### From binaries (Linux, macOS, Windows)
 

src/error.rs

@@ -55,7 +55,7 @@ impl fmt::Display for ParameterScanError {
 
 impl Error for ParameterScanError {}
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq)]
 pub enum OptionsError<'a> {
     EmptyRunsRange,
     TooManyCommandNames(usize),

src/export/asciidoc.rs

@@ -74,12 +74,10 @@ fn table_row(entry: &BenchmarkResultWithRelativeSpeed, unit: Unit) -> Vec<u8> {
     let rel_str = format!("{:.2}", entry.relative_speed);
     let rel_stddev_str = if entry.is_fastest {
         "".into()
-    } else {
-        if let Some(stddev) = entry.relative_speed_stddev {
+    } else if let Some(stddev) = entry.relative_speed_stddev {
         format!(" ± {:.2}", stddev)
     } else {
         "".into()
-        }
     };
 
     format!(

src/export/markdown.rs

@@ -63,12 +63,10 @@ fn add_table_row(dest: &mut Vec<u8>, entry: &BenchmarkResultWithRelativeSpeed, u
     let rel_str = format!("{:.2}", entry.relative_speed);
     let rel_stddev_str = if entry.is_fastest {
         "".into()
-    } else {
-        if let Some(stddev) = entry.relative_speed_stddev {
+    } else if let Some(stddev) = entry.relative_speed_stddev {
         format!(" ± {:.2}", stddev)
     } else {
         "".into()
-        }
     };
 
     dest.extend(

src/main.rs

@@ -261,7 +261,7 @@ fn build_export_manager(matches: &ArgMatches) -> io::Result<ExportManager> {
 }
 
 /// Build the commands to benchmark
-fn build_commands<'a>(matches: &'a ArgMatches) -> Vec<Command<'a>> {
+fn build_commands(matches: &ArgMatches) -> Vec<Command> {
     let command_names = matches.values_of("command-name");
     let command_strings = matches.values_of("command").unwrap();
 

src/options.rs

@@ -182,25 +182,21 @@ fn test_shell_parse_command() {
     assert_eq!(&s, "shell -x 'aaa bbb'");
 
     let cmd = shell.command();
-    // Command::get_program and Command::args are not yet available in stable channel.
-    // https://doc.rust-lang.org/std/process/struct.Command.html#method.get_program
-    let s = format!("{:?}", cmd);
-    assert_eq!(&s, r#""shell" "-x" "aaa bbb""#);
+    assert_eq!(cmd.get_program().to_string_lossy(), "shell");
+    assert_eq!(
+        cmd.get_args()
+            .map(|a| a.to_string_lossy())
+            .collect::<Vec<_>>(),
+        vec!["-x", "aaa bbb"]
+    );
 
     // Error cases
+    assert!(matches!(
+        Shell::parse("shell 'foo").unwrap_err(),
+        OptionsError::ShellParseError(_)
+    ));
 
-    match Shell::parse("shell 'foo").unwrap_err() {
-        OptionsError::ShellParseError(_) => { /* ok */ }
-        e => assert!(false, "Unexpected error: {}", e),
-    }
+    assert_eq!(Shell::parse("").unwrap_err(), OptionsError::EmptyShell);
 
-    match Shell::parse("").unwrap_err() {
-        OptionsError::EmptyShell => { /* ok */ }
-        e => assert!(false, "Unexpected error: {}", e),
-    }
-
-    match Shell::parse("''").unwrap_err() {
-        OptionsError::EmptyShell => { /* ok */ }
-        e => assert!(false, "Unexpected error: {}", e),
-    }
+    assert_eq!(Shell::parse("''").unwrap_err(), OptionsError::EmptyShell);
 }