style: simplify string interpolation

src/benchmark/executor.rs

@@ -54,7 +54,7 @@ fn run_command_and_measure_common(
     );
 
     let result = execute_and_measure(command)
-        .with_context(|| format!("Failed to run command '{}'", command_name))?;
+        .with_context(|| format!("Failed to run command '{command_name}'"))?;
 
     if command_failure_action == CmdFailureAction::RaiseError && !result.status.success() {
         bail!(
@@ -62,7 +62,7 @@ fn run_command_and_measure_common(
             Alternatively, use the '--show-output' option to debug what went wrong.",
             result.status.code().map_or(
                 "The process has been terminated by a signal".into(),
-                |c| format!("Command terminated with non-zero exit code: {}", c)
+                |c| format!("Command terminated with non-zero exit code: {c}")
             )
         );
     }

src/benchmark/mod.rs

@@ -312,7 +312,7 @@ impl<'a> Benchmark<'a> {
         let (mean_str, time_unit) = format_duration_unit(t_mean, self.options.time_unit);
         let min_str = format_duration(t_min, Some(time_unit));
         let max_str = format_duration(t_max, Some(time_unit));
-        let num_str = format!("{} runs", t_num);
+        let num_str = format!("{t_num} runs");
 
         let user_str = format_duration(user_mean, Some(time_unit));
         let system_str = format_duration(system_mean, Some(time_unit));

src/benchmark/scheduler.rs

@@ -86,7 +86,7 @@ impl<'a> Scheduler<'a> {
                             "{}{} times faster than {}",
                             format!("{:8.2}", item.relative_speed).bold().green(),
                             if let Some(stddev) = item.relative_speed_stddev {
-                                format!(" ± {}", format!("{:.2}", stddev).green())
+                                format!(" ± {}", format!("{stddev:.2}").green())
                             } else {
                                 "".into()
                             },
@@ -104,7 +104,7 @@ impl<'a> Scheduler<'a> {
                             if item.is_fastest {
                                 "        ".into()
                             } else if let Some(stddev) = item.relative_speed_stddev {
-                                format!(" ± {}", format!("{:5.2}", stddev).green())
+                                format!(" ± {}", format!("{stddev:5.2}").green())
                             } else {
                                 "        ".into()
                             },