replace Vec with slice in lintcheck

Author: y21

lintcheck/src/main.rs

@@ -309,7 +309,7 @@ impl Crate {
         target_dir_index: &AtomicUsize,
         total_crates_to_lint: usize,
         config: &LintcheckConfig,
-        lint_filter: &Vec<String>,
+        lint_filter: &[String],
         server: &Option<LintcheckServer>,
     ) -> Vec<ClippyWarning> {
         // advance the atomic index by one
@@ -728,7 +728,7 @@ fn read_stats_from_file(file_path: &Path) -> HashMap<String, usize> {
 }
 
 /// print how lint counts changed between runs
-fn print_stats(old_stats: HashMap<String, usize>, new_stats: HashMap<&String, usize>, lint_filter: &Vec<String>) {
+fn print_stats(old_stats: HashMap<String, usize>, new_stats: HashMap<&String, usize>, lint_filter: &[String]) {
     let same_in_both_hashmaps = old_stats
         .iter()
         .filter(|(old_key, old_val)| new_stats.get::<&String>(old_key) == Some(old_val))