fix clippy lints

Author: Firestar99

tests/compiletests/src/main.rs

@@ -151,7 +151,7 @@ impl Runner {
                 format!("{}-{}", env, variation.name)
             };
 
-            println!("Testing env: {}\n", stage_id);
+            println!("Testing env: {stage_id}\n");
 
             let target = format!("{SPIRV_TARGET_PREFIX}{env}");
             let libs = build_deps(&self.deps_target_dir, &self.codegen_backend_path, &target);

tests/difftests/bin/src/main.rs

@@ -26,7 +26,7 @@ fn main() -> Result<()> {
             ..o
         },
         Some(Err(e)) => {
-            eprintln!("Error parsing test options: {}", e);
+            eprintln!("Error parsing test options: {e}");
             process::exit(1);
         }
         None => TestOpts {
@@ -120,8 +120,7 @@ fn main() -> Result<()> {
             .map(|filter| {
                 if filter.contains('/') {
                     // Convert path-like filter to test name format
-                    let path_filter = filter.replace('/', "::");
-                    format!("{}", path_filter)
+                    filter.replace('/', "::")
                 } else {
                     filter
                 }

tests/difftests/bin/src/runner.rs

@@ -131,7 +131,7 @@ impl Runner {
             let config_json = serde_json::to_string(&config)
                 .map_err(|e| RunnerError::Config { msg: e.to_string() })?;
             let mut config_file = NamedTempFile::new()?;
-            write!(config_file, "{}", config_json).map_err(|e| RunnerError::Io { source: e })?;
+            write!(config_file, "{config_json}").map_err(|e| RunnerError::Io { source: e })?;
             trace!("Config file created at {}", config_file.path().display());
 
             let mut cmd = Command::new("cargo");
@@ -294,7 +294,7 @@ impl Runner {
                     .join("::")
             },
         );
-        format!("difftests::{}", name)
+        format!("difftests::{name}")
     }
 
     pub fn collect_test_dirs(root: &Path) -> RunnerResult<Vec<PathBuf>> {