Use expect for lint warnings (rust-lang#15625)

changelog:none

Author: samueltardieu

clippy_config/src/conf.rs

@@ -248,7 +248,7 @@ macro_rules! define_Conf {
 
         #[derive(Deserialize)]
         #[serde(field_identifier, rename_all = "kebab-case")]
-        #[allow(non_camel_case_types)]
+        #[expect(non_camel_case_types)]
         enum Field { $($name,)* third_party, }
 
         struct ConfVisitor<'a>(&'a SourceFile);
@@ -1213,7 +1213,7 @@ mod tests {
 
         for entry in toml_files {
             let file = fs::read_to_string(entry.path()).unwrap();
-            #[allow(clippy::zero_sized_map_values)]
+            #[expect(clippy::zero_sized_map_values)]
             if let Ok(map) = toml::from_str::<HashMap<String, IgnoredAny>>(&file) {
                 for name in map.keys() {
                     names.remove(name.as_str());

clippy_config/src/types.rs

@@ -131,7 +131,7 @@ impl DisallowedPathEnum {
 }
 
 /// Creates a map of disallowed items to the reason they were disallowed.
-#[allow(clippy::type_complexity)]
+#[expect(clippy::type_complexity)]
 pub fn create_disallowed_map<const REPLACEMENT_ALLOWED: bool>(
     tcx: TyCtxt<'_>,
     disallowed_paths: &'static [DisallowedPath<REPLACEMENT_ALLOWED>],

clippy_dev/src/dogfood.rs

@@ -4,7 +4,7 @@ use itertools::Itertools;
 /// # Panics
 ///
 /// Panics if unable to run the dogfood test
-#[allow(clippy::fn_params_excessive_bools)]
+#[expect(clippy::fn_params_excessive_bools)]
 pub fn dogfood(fix: bool, allow_dirty: bool, allow_staged: bool, allow_no_vcs: bool) {
     run_exit_on_err(
         "cargo test",

clippy_dev/src/main.rs

@@ -192,7 +192,7 @@ enum DevCommand {
         /// Which lint's page to load initially (optional)
         lint: Option<String>,
     },
-    #[allow(clippy::doc_markdown)]
+    #[expect(clippy::doc_markdown)]
     /// Manually run clippy on a file or package
     ///
     /// ## Examples

clippy_dev/src/new_lint.rs

@@ -443,7 +443,6 @@ fn create_lint_for_ty(lint: &LintData<'_>, enable_msrv: bool, ty: &str) -> io::R
     Ok(())
 }
 
-#[allow(clippy::too_many_lines)]
 fn setup_mod_file(path: &Path, lint: &LintData<'_>) -> io::Result<&'static str> {
     let lint_name_upper = lint.name.to_uppercase();
 

clippy_lints/src/arbitrary_source_item_ordering.rs

@@ -167,7 +167,7 @@ declare_clippy_lint! {
 impl_lint_pass!(ArbitrarySourceItemOrdering => [ARBITRARY_SOURCE_ITEM_ORDERING]);
 
 #[derive(Debug)]
-#[allow(clippy::struct_excessive_bools)] // Bools are cached feature flags.
+#[expect(clippy::struct_excessive_bools, reason = "Bools are cached feature flags")]
 pub struct ArbitrarySourceItemOrdering {
     assoc_types_order: SourceItemOrderingTraitAssocItemKinds,
     enable_ordering_for_enum: bool,

clippy_lints/src/deprecated_lints.rs

@@ -7,7 +7,6 @@ macro_rules! declare_with_version {
         $e:expr,
     )*]) => {
         pub static $name: &[(&str, &str)] = &[$($e),*];
-        #[allow(unused)]
         pub static $name_version: &[&str] = &[$($version),*];
     };
 }

clippy_lints/src/doc/mod.rs

@@ -968,7 +968,7 @@ fn check_for_code_clusters<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a
 /// This walks the "events" (think sections of markdown) produced by `pulldown_cmark`,
 /// so lints here will generally access that information.
 /// Returns documentation headers -- whether a "Safety", "Errors", "Panic" section was found
-#[allow(clippy::too_many_lines)] // Only a big match statement
+#[expect(clippy::too_many_lines, reason = "big match statement")]
 fn check_doc<'a, Events: Iterator<Item = (pulldown_cmark::Event<'a>, Range<usize>)>>(
     cx: &LateContext<'_>,
     valid_idents: &FxHashSet<String>,

clippy_lints/src/eta_reduction.rs

@@ -86,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
     }
 }
 
-#[allow(clippy::too_many_lines)]
+#[expect(clippy::too_many_lines)]
 fn check_closure<'tcx>(cx: &LateContext<'tcx>, outer_receiver: Option<&Expr<'tcx>>, expr: &Expr<'tcx>) {
     let body = if let ExprKind::Closure(c) = expr.kind
         && c.fn_decl.inputs.iter().all(|ty| matches!(ty.kind, TyKind::Infer(())))

clippy_lints/src/format.rs

@@ -39,7 +39,6 @@ declare_clippy_lint! {
     "useless use of `format!`"
 }
 
-#[allow(clippy::module_name_repetitions)]
 pub struct UselessFormat {
     format_args: FormatArgsStorage,
 }