diff --git a/Cargo.toml b/Cargo.toml
index 9655298..9b5feab 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,6 @@ cast_possible_truncation = "allow"
 cloned_instead_of_copied = "allow"
 default_trait_access = "allow"
 explicit_into_iter_loop = "allow"
-explicit_iter_loop = "allow"
 missing_errors_doc = "allow"
 missing_panics_doc = "allow"
 module_name_repetitions = "allow"
diff --git a/bin/src/config.rs b/bin/src/config.rs
index 7b70993..1a95eaf 100644
--- a/bin/src/config.rs
+++ b/bin/src/config.rs
@@ -369,7 +369,7 @@ fn parse_warning_code(src: &str) -> Result<u32, ConfigErr> {
 
 fn vfs(files: &[PathBuf]) -> vfs::ReadOnlyVfs {
     let mut vfs = ReadOnlyVfs::default();
-    for file in files.iter() {
+    for file in files {
         if let Ok(data) = fs::read_to_string(file) {
             let _id = vfs.alloc_file_id(file);
             vfs.set_file_contents(file, data.as_bytes());
diff --git a/bin/src/traits.rs b/bin/src/traits.rs
index c080291..284adf4 100644
--- a/bin/src/traits.rs
+++ b/bin/src/traits.rs
@@ -51,7 +51,7 @@ fn write_stderr<T: Write>(
     let path = vfs.file_path(file_id);
     let range = |at: TextRange| at.start().into()..at.end().into();
     let src_id = path.to_str().unwrap_or("<unknown>");
-    for report in lint_result.reports.iter() {
+    for report in &lint_result.reports {
         let offset = report
             .diagnostics
             .iter()
@@ -99,8 +99,8 @@ fn write_errfmt<T: Write>(
     let file_id = lint_result.file_id;
     let src = str::from_utf8(vfs.get(file_id)).unwrap();
     let path = vfs.file_path(file_id);
-    for report in lint_result.reports.iter() {
-        for diagnostic in report.diagnostics.iter() {
+    for report in &lint_result.reports {
+        for diagnostic in &report.diagnostics {
             let line = line(diagnostic.at.start(), src);
             let col = column(diagnostic.at.start(), src);
             writeln!(
diff --git a/bin/src/utils.rs b/bin/src/utils.rs
index 338098f..d453813 100644
--- a/bin/src/utils.rs
+++ b/bin/src/utils.rs
@@ -8,7 +8,7 @@ pub fn lint_map_of(
     lints: &[&'static Box<dyn Lint>],
 ) -> HashMap<SyntaxKind, Vec<&'static Box<dyn Lint>>> {
     let mut map = HashMap::new();
-    for lint in lints.iter() {
+    for lint in lints {
         let lint = *lint;
         let matches = lint.match_kind();
         for m in matches {
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
index 2655292..c38217c 100644
--- a/lib/src/lib.rs
+++ b/lib/src/lib.rs
@@ -99,7 +99,7 @@ impl Report {
     }
     /// Apply all diagnostics. Assumption: diagnostics do not overlap
     pub fn apply(&self, src: &mut String) {
-        for d in self.diagnostics.iter() {
+        for d in &self.diagnostics {
             d.apply(src);
         }
     }