diff --git a/clippy_lints/src/attrs/deprecated_cfg_attr.rs b/clippy_lints/src/attrs/deprecated_cfg_attr.rs
index d67a194b0206..ea5da3726144 100644
--- a/clippy_lints/src/attrs/deprecated_cfg_attr.rs
+++ b/clippy_lints/src/attrs/deprecated_cfg_attr.rs
@@ -2,7 +2,7 @@ use super::{Attribute, DEPRECATED_CFG_ATTR, DEPRECATED_CLIPPY_CFG_ATTR, unnecess
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::msrvs::{self, MsrvStack};
 use clippy_utils::sym;
-use rustc_ast::AttrStyle;
+use rustc_ast::{AttrStyle, MetaItemInner};
 use rustc_errors::Applicability;
 use rustc_lint::EarlyContext;
 
@@ -53,7 +53,7 @@ pub(super) fn check_clippy(cx: &EarlyContext<'_>, attr: &Attribute) {
     if attr.has_name(sym::cfg)
         && let Some(list) = attr.meta_item_list()
     {
-        for item in list.iter().filter_map(|item| item.meta_item()) {
+        for item in list.iter().filter_map(MetaItemInner::meta_item) {
             check_deprecated_cfg_recursively(cx, item);
         }
     }
@@ -63,7 +63,7 @@ fn check_deprecated_cfg_recursively(cx: &EarlyContext<'_>, attr: &rustc_ast::Met
     if let Some(ident) = attr.ident() {
         if matches!(ident.name, sym::any | sym::all | sym::not) {
             let Some(list) = attr.meta_item_list() else { return };
-            for item in list.iter().filter_map(|item| item.meta_item()) {
+            for item in list.iter().filter_map(MetaItemInner::meta_item) {
                 check_deprecated_cfg_recursively(cx, item);
             }
         } else {
diff --git a/clippy_lints/src/definition_in_module_root.rs b/clippy_lints/src/definition_in_module_root.rs
index 4b454e282cc2..fd5b3dc9c88d 100644
--- a/clippy_lints/src/definition_in_module_root.rs
+++ b/clippy_lints/src/definition_in_module_root.rs
@@ -3,6 +3,7 @@ use rustc_ast::ast::{self, Inline, ItemKind, ModKind};
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext as _};
 use rustc_session::impl_lint_pass;
 use rustc_span::{FileName, SourceFile, sym};
+use std::path::Path;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -153,7 +154,7 @@ fn has_macro_export(item: &ast::Item) -> bool {
 fn is_mod_rs(file: &SourceFile) -> bool {
     if let FileName::Real(name) = &file.name {
         name.local_path()
-            .and_then(|p| p.file_name())
+            .and_then(Path::file_name)
             .is_some_and(|n| n == "mod.rs")
     } else {
         false
diff --git a/clippy_lints/src/eta_reduction.rs b/clippy_lints/src/eta_reduction.rs
index 663dde0769cd..41ff8b9d9880 100644
--- a/clippy_lints/src/eta_reduction.rs
+++ b/clippy_lints/src/eta_reduction.rs
@@ -334,7 +334,7 @@ fn has_late_bound_to_non_late_bound_regions(from_sig: FnSig<'_>, to_sig: FnSig<'
         if from_subs.len() != to_subs.len() {
             return true;
         }
-        for (from_arg, to_arg) in to_subs.iter().zip(from_subs) {
+        for (from_arg, to_arg) in from_subs.iter().zip(to_subs) {
             match (from_arg.kind(), to_arg.kind()) {
                 (GenericArgKind::Lifetime(from_region), GenericArgKind::Lifetime(to_region)) => {
                     if check_region(from_region, to_region) {
diff --git a/clippy_lints/src/loops/infinite_loop.rs b/clippy_lints/src/loops/infinite_loop.rs
index 404ff33838b1..455fb0005d5e 100644
--- a/clippy_lints/src/loops/infinite_loop.rs
+++ b/clippy_lints/src/loops/infinite_loop.rs
@@ -219,7 +219,7 @@ fn is_never_return(ret_ty: FnRetTy<'_>) -> bool {
             bounds,
             ..
         }) => {
-            if let Some(trait_ref) = bounds.iter().find_map(|b| b.trait_ref())
+            if let Some(trait_ref) = bounds.iter().find_map(hir::GenericBound::trait_ref)
                 && let Some(segment) = trait_ref
                     .path
                     .segments
diff --git a/tests/ui/eta.fixed b/tests/ui/eta.fixed
index 20405a1233c4..ae54b8100434 100644
--- a/tests/ui/eta.fixed
+++ b/tests/ui/eta.fixed
@@ -687,3 +687,24 @@ mod issue_13094 {
             .collect()
     }
 }
+
+// https://github.com/rust-lang/rust-clippy/issues/14215
+fn early_bound_region_in_adt() {
+    use std::marker::PhantomData;
+
+    struct Guard<'a, S> {
+        _data: PhantomData<&'a S>,
+    }
+
+    impl<S> Guard<'_, S> {
+        fn do_something(_this: &mut Self) {}
+    }
+
+    fn takes_guard_fn<S, F>(_func: F)
+    where
+        F: FnOnce(&mut Guard<S>),
+    {
+    }
+
+    takes_guard_fn::<i32, _>(|s| Guard::do_something(s));
+}
diff --git a/tests/ui/eta.rs b/tests/ui/eta.rs
index 4268810635fb..4cfbf491dcb2 100644
--- a/tests/ui/eta.rs
+++ b/tests/ui/eta.rs
@@ -687,3 +687,24 @@ mod issue_13094 {
             .collect()
     }
 }
+
+// https://github.com/rust-lang/rust-clippy/issues/14215
+fn early_bound_region_in_adt() {
+    use std::marker::PhantomData;
+
+    struct Guard<'a, S> {
+        _data: PhantomData<&'a S>,
+    }
+
+    impl<S> Guard<'_, S> {
+        fn do_something(_this: &mut Self) {}
+    }
+
+    fn takes_guard_fn<S, F>(_func: F)
+    where
+        F: FnOnce(&mut Guard<S>),
+    {
+    }
+
+    takes_guard_fn::<i32, _>(|s| Guard::do_something(s));
+}