more clippy::complexity fixes

      redundant_guards
      redundant_slicing
      filter_next
      needless_borrowed_reference
      useless_format

2 files changed, 5 insertions, 14 deletions

diff --git a/compiler/rustc_resolve/src/imports.rs b/compiler/rustc_resolve/src/imports.rs
index e601ceaa50c..39e82da6d9d 100644
--- a/compiler/rustc_resolve/src/imports.rs
+++ b/compiler/rustc_resolve/src/imports.rs
@@ -1063,12 +1063,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
                             initial_binding.res()
                         });
                         let res = binding.res();
-                        let has_ambiguity_error = this
-                            .ambiguity_errors
-                            .iter()
-                            .filter(|error| !error.warning)
-                            .next()
-                            .is_some();
+                        let has_ambiguity_error =
+                            this.ambiguity_errors.iter().any(|error| !error.warning);
                         if res == Res::Err || has_ambiguity_error {
                             this.tcx
                                 .sess
diff --git a/compiler/rustc_resolve/src/late/diagnostics.rs b/compiler/rustc_resolve/src/late/diagnostics.rs
index df30c185c60..3bd6b0f1d77 100644
--- a/compiler/rustc_resolve/src/late/diagnostics.rs
+++ b/compiler/rustc_resolve/src/late/diagnostics.rs
@@ -1829,13 +1829,12 @@ impl<'a: 'ast, 'ast, 'tcx> LateResolutionVisitor<'a, '_, 'ast, 'tcx> {
             )
             .iter()
             .filter_map(|candidate| candidate.did)
-            .filter(|did| {
+            .find(|did| {
                 self.r
                     .tcx
                     .get_attrs(*did, sym::rustc_diagnostic_item)
                     .any(|attr| attr.value_str() == Some(sym::Default))
-            })
-            .next();
+            });
         let Some(default_trait) = default_trait else {
             return;
         };
@@ -1880,11 +1879,7 @@ impl<'a: 'ast, 'ast, 'tcx> LateResolutionVisitor<'a, '_, 'ast, 'tcx> {
         };
 
         fields.is_some_and(|fields| {
-            fields
-                .iter()
-                .filter(|vis| !self.r.is_accessible_from(**vis, self.parent_scope.module))
-                .next()
-                .is_some()
+            fields.iter().any(|vis| !self.r.is_accessible_from(*vis, self.parent_scope.module))
         })
     }