diff --git a/cli/lsp/analysis.rs b/cli/lsp/analysis.rs
index ddad05ee3b..c7f5ba8aae 100644
--- a/cli/lsp/analysis.rs
+++ b/cli/lsp/analysis.rs
@@ -29,12 +29,7 @@ use tower_lsp::lsp_types::Range;
 /// Diagnostic error codes which actually are the same, and so when grouping
 /// fixes we treat them the same.
 static FIX_ALL_ERROR_CODES: Lazy<HashMap<&'static str, &'static str>> =
-  Lazy::new(|| {
-    ([("2339", "2339"), ("2345", "2339")])
-      .iter()
-      .cloned()
-      .collect()
-  });
+  Lazy::new(|| ([("2339", "2339"), ("2345", "2339")]).into_iter().collect());
 
 /// Fixes which help determine if there is a preferred fix when there are
 /// multiple fixes available.
@@ -54,8 +49,7 @@ static PREFERRED_FIXES: Lazy<HashMap<&'static str, (u32, bool)>> =
       ("addMissingAwait", (1, false)),
       ("fixImport", (0, true)),
     ])
-    .iter()
-    .cloned()
+    .into_iter()
     .collect()
   });
 
diff --git a/cli/lsp/diagnostics.rs b/cli/lsp/diagnostics.rs
index 605bd85ac2..b4be63a552 100644
--- a/cli/lsp/diagnostics.rs
+++ b/cli/lsp/diagnostics.rs
@@ -525,12 +525,10 @@ async fn generate_ts_diagnostics(
   let specifiers = snapshot
     .documents
     .documents(true, true)
-    .iter()
-    .map(|d| d.specifier().clone())
-    .collect::<Vec<_>>();
+    .into_iter()
+    .map(|d| d.specifier().clone());
   let (enabled_specifiers, disabled_specifiers) = specifiers
-    .iter()
-    .cloned()
+    .into_iter()
     .partition::<Vec<_>, _>(|s| config.specifier_enabled(s));
   let ts_diagnostics_map: TsDiagnosticsMap = if !enabled_specifiers.is_empty() {
     let req = tsc::RequestMethod::GetDiagnostics(enabled_specifiers);
diff --git a/cli/lsp/documents.rs b/cli/lsp/documents.rs
index 92dfdf5433..0e3cb2a7fe 100644
--- a/cli/lsp/documents.rs
+++ b/cli/lsp/documents.rs
@@ -52,15 +52,13 @@ static JS_HEADERS: Lazy<HashMap<String, String>> = Lazy::new(|| {
     "content-type".to_string(),
     "application/javascript".to_string(),
   )])
-  .iter()
-  .cloned()
+  .into_iter()
   .collect()
 });
 
 static JSX_HEADERS: Lazy<HashMap<String, String>> = Lazy::new(|| {
   ([("content-type".to_string(), "text/jsx".to_string())])
-    .iter()
-    .cloned()
+    .into_iter()
     .collect()
 });
 
@@ -69,15 +67,13 @@ static TS_HEADERS: Lazy<HashMap<String, String>> = Lazy::new(|| {
     "content-type".to_string(),
     "application/typescript".to_string(),
   )])
-  .iter()
-  .cloned()
+  .into_iter()
   .collect()
 });
 
 static TSX_HEADERS: Lazy<HashMap<String, String>> = Lazy::new(|| {
   ([("content-type".to_string(), "text/tsx".to_string())])
-    .iter()
-    .cloned()
+    .into_iter()
     .collect()
 });
 
diff --git a/cli/tools/bench.rs b/cli/tools/bench.rs
index afd20851aa..4538aababc 100644
--- a/cli/tools/bench.rs
+++ b/cli/tools/bench.rs
@@ -538,7 +538,7 @@ pub async fn run_benchmarks_with_watch(
     let paths_to_watch_clone = paths_to_watch.clone();
     let files_changed = changed.is_some();
     let bench_options = &bench_options;
-    let ps = ps.borrow();
+    let ps = ps.borrow().clone();
 
     async move {
       let bench_modules =
@@ -617,7 +617,7 @@ pub async fn run_benchmarks_with_watch(
           for path in changed.iter().filter_map(|path| {
             deno_core::resolve_url_or_path(&path.to_string_lossy()).ok()
           }) {
-            if modules.contains(&&path) {
+            if modules.contains(&path) {
               modules_to_reload.push((specifier, ModuleKind::Esm));
               break;
             }
@@ -651,16 +651,15 @@ pub async fn run_benchmarks_with_watch(
 
   let operation = |modules_to_reload: Vec<(ModuleSpecifier, ModuleKind)>| {
     let permissions = &permissions;
-    ps.borrow_mut().reset_for_file_watcher();
-    let ps = ps.borrow();
     let bench_options = &bench_options;
+    ps.borrow_mut().reset_for_file_watcher();
+    let ps = ps.borrow().clone();
 
     async move {
       let specifiers =
         collect_specifiers(&bench_options.files, is_supported_bench_path)?
-          .iter()
+          .into_iter()
           .filter(|specifier| contains_specifier(&modules_to_reload, specifier))
-          .cloned()
           .collect::<Vec<ModuleSpecifier>>();
 
       check_specifiers(&ps, permissions.clone(), specifiers.clone()).await?;
diff --git a/cli/tools/test.rs b/cli/tools/test.rs
index 6519a3ca31..56674b9762 100644
--- a/cli/tools/test.rs
+++ b/cli/tools/test.rs
@@ -987,7 +987,7 @@ pub async fn check_specifiers(
 
 /// Test a collection of specifiers with test modes concurrently.
 async fn test_specifiers(
-  ps: ProcState,
+  ps: &ProcState,
   permissions: &Permissions,
   specifiers_with_mode: Vec<(ModuleSpecifier, TestMode)>,
   options: TestSpecifierOptions,
@@ -1328,7 +1328,7 @@ pub async fn run_tests(
   }
 
   test_specifiers(
-    ps,
+    &ps,
     &permissions,
     specifiers_with_mode,
     TestSpecifierOptions {
@@ -1361,7 +1361,6 @@ pub async fn run_tests_with_watch(
     let paths_to_watch_clone = paths_to_watch.clone();
     let files_changed = changed.is_some();
     let test_options = &test_options;
-
     let ps = ps.borrow().clone();
 
     async move {
@@ -1445,7 +1444,7 @@ pub async fn run_tests_with_watch(
           for path in changed.iter().filter_map(|path| {
             deno_core::resolve_url_or_path(&path.to_string_lossy()).ok()
           }) {
-            if modules.contains(&&path) {
+            if modules.contains(&path) {
               modules_to_reload.push((specifier, ModuleKind::Esm));
               break;
             }
@@ -1490,11 +1489,10 @@ pub async fn run_tests_with_watch(
         &test_options.doc,
       )
       .await?
-      .iter()
+      .into_iter()
       .filter(|(specifier, _)| {
         contains_specifier(&modules_to_reload, specifier)
       })
-      .cloned()
       .collect::<Vec<(ModuleSpecifier, TestMode)>>();
 
       check_specifiers(&ps, permissions.clone(), specifiers_with_mode.clone())
@@ -1505,7 +1503,7 @@ pub async fn run_tests_with_watch(
       }
 
       test_specifiers(
-        ps,
+        &ps,
         permissions,
         specifiers_with_mode,
         TestSpecifierOptions {
diff --git a/ops/fast_call.rs b/ops/fast_call.rs
index 9384761a18..de11b389bb 100644
--- a/ops/fast_call.rs
+++ b/ops/fast_call.rs
@@ -141,9 +141,9 @@ pub(crate) fn generate(
 
   // Retain only *pure* parameters.
   let mut fast_fn_inputs = if optimizer.has_opstate_in_parameters() {
-    inputs.iter().skip(1).cloned().collect()
+    inputs.into_iter().skip(1).collect()
   } else {
-    inputs.clone()
+    inputs
   };
 
   let mut input_variants = optimizer