diff --git a/Cargo.toml b/Cargo.toml
index bb259c77ee37..e9b11d5df2f2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "clippy"
 # begin autogenerated version
-version = "0.1.85"
+version = "0.1.86"
 # end autogenerated version
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
diff --git a/clippy_config/Cargo.toml b/clippy_config/Cargo.toml
index 3f18a0bc7d25..c761e207c6b6 100644
--- a/clippy_config/Cargo.toml
+++ b/clippy_config/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "clippy_config"
 # begin autogenerated version
-version = "0.1.85"
+version = "0.1.86"
 # end autogenerated version
 edition = "2021"
 publish = false
diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml
index c1f8e82f6988..b575ac1bf4cc 100644
--- a/clippy_lints/Cargo.toml
+++ b/clippy_lints/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "clippy_lints"
 # begin autogenerated version
-version = "0.1.85"
+version = "0.1.86"
 # end autogenerated version
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
diff --git a/clippy_lints/src/arbitrary_source_item_ordering.rs b/clippy_lints/src/arbitrary_source_item_ordering.rs
index 07d48344d80f..380b094d017e 100644
--- a/clippy_lints/src/arbitrary_source_item_ordering.rs
+++ b/clippy_lints/src/arbitrary_source_item_ordering.rs
@@ -464,7 +464,7 @@ fn convert_module_item_kind(value: &ItemKind<'_>) -> SourceItemOrderingModuleIte
         ItemKind::Use(..) => Use,
         ItemKind::Static(..) => Static,
         ItemKind::Const(..) => Const,
-        ItemKind::Fn(..) => Fn,
+        ItemKind::Fn { .. } => Fn,
         ItemKind::Macro(..) => Macro,
         ItemKind::Mod(..) => Mod,
         ItemKind::ForeignMod { .. } => ForeignMod,
diff --git a/clippy_lints/src/attrs/utils.rs b/clippy_lints/src/attrs/utils.rs
index 96de06429040..152e6ec70a18 100644
--- a/clippy_lints/src/attrs/utils.rs
+++ b/clippy_lints/src/attrs/utils.rs
@@ -21,7 +21,7 @@ pub(super) fn is_lint_level(symbol: Symbol, attr_id: AttrId) -> bool {
 }
 
 pub(super) fn is_relevant_item(cx: &LateContext<'_>, item: &Item<'_>) -> bool {
-    if let ItemKind::Fn(_, _, eid) = item.kind {
+    if let ItemKind::Fn { body: eid, .. } = item.kind {
         is_relevant_expr(cx, cx.tcx.typeck_body(eid), cx.tcx.hir().body(eid).value)
     } else {
         true
diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs
index 6820601b7055..7561a6cf2a78 100644
--- a/clippy_lints/src/doc/mod.rs
+++ b/clippy_lints/src/doc/mod.rs
@@ -639,7 +639,7 @@ impl<'tcx> LateLintPass<'tcx> for Documentation {
                     self.check_private_items,
                 );
                 match item.kind {
-                    ItemKind::Fn(sig, _, body_id) => {
+                    ItemKind::Fn { sig, body: body_id, .. } => {
                         if !(is_entrypoint_fn(cx, item.owner_id.to_def_id())
                             || in_external_macro(cx.tcx.sess, item.span))
                         {
diff --git a/clippy_lints/src/doc/too_long_first_doc_paragraph.rs b/clippy_lints/src/doc/too_long_first_doc_paragraph.rs
index 0f9ff5508532..1f89cab91480 100644
--- a/clippy_lints/src/doc/too_long_first_doc_paragraph.rs
+++ b/clippy_lints/src/doc/too_long_first_doc_paragraph.rs
@@ -25,7 +25,7 @@ pub(super) fn check(
             // page. So associated items or impl blocks are not part of this list.
             ItemKind::Static(..)
                 | ItemKind::Const(..)
-                | ItemKind::Fn(..)
+                | ItemKind::Fn { .. }
                 | ItemKind::Macro(..)
                 | ItemKind::Mod(..)
                 | ItemKind::TyAlias(..)
diff --git a/clippy_lints/src/equatable_if_let.rs b/clippy_lints/src/equatable_if_let.rs
index fb9f2b1526e3..9c8edfd6113f 100644
--- a/clippy_lints/src/equatable_if_let.rs
+++ b/clippy_lints/src/equatable_if_let.rs
@@ -55,7 +55,7 @@ fn unary_pattern(pat: &Pat<'_>) -> bool {
         | PatKind::Err(_) => false,
         PatKind::Struct(_, a, etc) => !etc && a.iter().all(|x| unary_pattern(x.pat)),
         PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => etc.as_opt_usize().is_none() && array_rec(a),
-        PatKind::Ref(x, _) | PatKind::Box(x) | PatKind::Deref(x) => unary_pattern(x),
+        PatKind::Ref(x, _) | PatKind::Box(x) | PatKind::Deref(x) | PatKind::Guard(x, _) => unary_pattern(x),
         PatKind::Path(_) | PatKind::Lit(_) => true,
     }
 }
diff --git a/clippy_lints/src/exit.rs b/clippy_lints/src/exit.rs
index 3c235fab0098..e6ddcd107d9d 100644
--- a/clippy_lints/src/exit.rs
+++ b/clippy_lints/src/exit.rs
@@ -48,7 +48,7 @@ impl<'tcx> LateLintPass<'tcx> for Exit {
             && let Some(def_id) = cx.qpath_res(path, path_expr.hir_id).opt_def_id()
             && cx.tcx.is_diagnostic_item(sym::process_exit, def_id)
             && let parent = cx.tcx.hir().get_parent_item(e.hir_id)
-            && let OwnerNode::Item(Item{kind: ItemKind::Fn(..), ..}) = cx.tcx.hir_owner_node(parent)
+            && let OwnerNode::Item(Item{kind: ItemKind::Fn{ .. }, ..}) = cx.tcx.hir_owner_node(parent)
             // If the next item up is a function we check if it is an entry point
             // and only then emit a linter warning
             && !is_entrypoint_fn(cx, parent.to_def_id())
diff --git a/clippy_lints/src/extra_unused_type_parameters.rs b/clippy_lints/src/extra_unused_type_parameters.rs
index ae4b66800652..d0159ab89e10 100644
--- a/clippy_lints/src/extra_unused_type_parameters.rs
+++ b/clippy_lints/src/extra_unused_type_parameters.rs
@@ -253,7 +253,11 @@ fn is_empty_body(cx: &LateContext<'_>, body: BodyId) -> bool {
 
 impl<'tcx> LateLintPass<'tcx> for ExtraUnusedTypeParameters {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) {
-        if let ItemKind::Fn(_, generics, body_id) = item.kind
+        if let ItemKind::Fn {
+            generics,
+            body: body_id,
+            ..
+        } = item.kind
             && !generics.params.is_empty()
             && !is_empty_body(cx, body_id)
             && (!self.avoid_breaking_exported_api || !cx.effective_visibilities.is_exported(item.owner_id.def_id))
diff --git a/clippy_lints/src/functions/must_use.rs b/clippy_lints/src/functions/must_use.rs
index afdb5d5306a6..1a01f5f885c3 100644
--- a/clippy_lints/src/functions/must_use.rs
+++ b/clippy_lints/src/functions/must_use.rs
@@ -24,7 +24,12 @@ use super::{DOUBLE_MUST_USE, MUST_USE_CANDIDATE, MUST_USE_UNIT};
 pub(super) fn check_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::Item<'_>) {
     let attrs = cx.tcx.hir().attrs(item.hir_id());
     let attr = cx.tcx.get_attr(item.owner_id, sym::must_use);
-    if let hir::ItemKind::Fn(ref sig, _generics, ref body_id) = item.kind {
+    if let hir::ItemKind::Fn {
+        ref sig,
+        body: ref body_id,
+        ..
+    } = item.kind
+    {
         let is_public = cx.effective_visibilities.is_exported(item.owner_id.def_id);
         let fn_header_span = item.span.with_hi(sig.decl.output.span().hi());
         if let Some(attr) = attr {
diff --git a/clippy_lints/src/functions/result.rs b/clippy_lints/src/functions/result.rs
index 674d78eaae76..9c396986f62a 100644
--- a/clippy_lints/src/functions/result.rs
+++ b/clippy_lints/src/functions/result.rs
@@ -36,7 +36,7 @@ fn result_err_ty<'tcx>(
 }
 
 pub(super) fn check_item<'tcx>(cx: &LateContext<'tcx>, item: &hir::Item<'tcx>, large_err_threshold: u64, msrv: &Msrv) {
-    if let hir::ItemKind::Fn(ref sig, _generics, _) = item.kind
+    if let hir::ItemKind::Fn { ref sig, .. } = item.kind
         && let Some((hir_ty, err_ty)) = result_err_ty(cx, sig.decl, item.owner_id.def_id, item.span)
     {
         if cx.effective_visibilities.is_exported(item.owner_id.def_id) {
diff --git a/clippy_lints/src/implicit_hasher.rs b/clippy_lints/src/implicit_hasher.rs
index c370f206c8f8..ad2da3c7fcd1 100644
--- a/clippy_lints/src/implicit_hasher.rs
+++ b/clippy_lints/src/implicit_hasher.rs
@@ -149,7 +149,12 @@ impl<'tcx> LateLintPass<'tcx> for ImplicitHasher {
                     );
                 }
             },
-            ItemKind::Fn(ref sig, generics, body_id) => {
+            ItemKind::Fn {
+                ref sig,
+                generics,
+                body: body_id,
+                ..
+            } => {
                 let body = cx.tcx.hir().body(body_id);
 
                 for ty in sig.decl.inputs {
diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs
index 8b2eee34a972..239822f40856 100644
--- a/clippy_lints/src/lifetimes.rs
+++ b/clippy_lints/src/lifetimes.rs
@@ -95,7 +95,13 @@ declare_lint_pass!(Lifetimes => [NEEDLESS_LIFETIMES, EXTRA_UNUSED_LIFETIMES]);
 
 impl<'tcx> LateLintPass<'tcx> for Lifetimes {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'_>) {
-        if let ItemKind::Fn(ref sig, generics, id) = item.kind {
+        if let ItemKind::Fn {
+            ref sig,
+            generics,
+            body: id,
+            ..
+        } = item.kind
+        {
             check_fn_inner(cx, sig, Some(id), None, generics, item.span, true);
         } else if let ItemKind::Impl(impl_) = item.kind {
             if !item.span.from_expansion() {
diff --git a/clippy_lints/src/loops/infinite_loop.rs b/clippy_lints/src/loops/infinite_loop.rs
index d863f6f9ab6d..6be30f3c957b 100644
--- a/clippy_lints/src/loops/infinite_loop.rs
+++ b/clippy_lints/src/loops/infinite_loop.rs
@@ -75,7 +75,11 @@ fn get_parent_fn_ret_ty<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>) -> Option
                 ..
             }) => (),
             Node::Item(hir::Item {
-                kind: hir::ItemKind::Fn(FnSig { decl, .. }, _, _),
+                kind:
+                    hir::ItemKind::Fn {
+                        sig: FnSig { decl, .. },
+                        ..
+                    },
                 ..
             })
             | Node::TraitItem(hir::TraitItem {
diff --git a/clippy_lints/src/matches/match_same_arms.rs b/clippy_lints/src/matches/match_same_arms.rs
index b72a61a43849..4b731d759723 100644
--- a/clippy_lints/src/matches/match_same_arms.rs
+++ b/clippy_lints/src/matches/match_same_arms.rs
@@ -254,9 +254,11 @@ impl<'a> NormalizedPat<'a> {
     fn from_pat(cx: &LateContext<'_>, arena: &'a DroplessArena, pat: &'a Pat<'_>) -> Self {
         match pat.kind {
             PatKind::Wild | PatKind::Binding(.., None) => Self::Wild,
-            PatKind::Binding(.., Some(pat)) | PatKind::Box(pat) | PatKind::Deref(pat) | PatKind::Ref(pat, _) => {
-                Self::from_pat(cx, arena, pat)
-            },
+            PatKind::Binding(.., Some(pat))
+            | PatKind::Box(pat)
+            | PatKind::Deref(pat)
+            | PatKind::Ref(pat, _)
+            | PatKind::Guard(pat, _) => Self::from_pat(cx, arena, pat),
             PatKind::Never => Self::Never,
             PatKind::Struct(ref path, fields, _) => {
                 let fields =
diff --git a/clippy_lints/src/matches/needless_match.rs b/clippy_lints/src/matches/needless_match.rs
index 73822314b4b4..fd7c6891bdb2 100644
--- a/clippy_lints/src/matches/needless_match.rs
+++ b/clippy_lints/src/matches/needless_match.rs
@@ -133,7 +133,7 @@ fn expr_ty_matches_p_ty(cx: &LateContext<'_>, expr: &Expr<'_>, p_expr: &Expr<'_>
         },
         // compare match_expr ty with RetTy in `fn foo() -> RetTy`
         Node::Item(item) => {
-            if let ItemKind::Fn(..) = item.kind {
+            if let ItemKind::Fn { .. } = item.kind {
                 let output = cx
                     .tcx
                     .fn_sig(item.owner_id)
diff --git a/clippy_lints/src/matches/single_match.rs b/clippy_lints/src/matches/single_match.rs
index 3ca20479f8e0..ac33e4099a1f 100644
--- a/clippy_lints/src/matches/single_match.rs
+++ b/clippy_lints/src/matches/single_match.rs
@@ -343,6 +343,10 @@ impl<'a> PatState<'a> {
                 matches!(self, Self::Wild)
             },
 
+            PatKind::Guard(..) => {
+                matches!(self, Self::Wild)
+            },
+
             // Patterns for things which can only contain a single sub-pattern.
             PatKind::Binding(_, _, _, Some(pat)) | PatKind::Ref(pat, _) | PatKind::Box(pat) | PatKind::Deref(pat) => {
                 self.add_pat(cx, pat)
diff --git a/clippy_lints/src/methods/unnecessary_to_owned.rs b/clippy_lints/src/methods/unnecessary_to_owned.rs
index a52851c9a1ab..964f1603f0e5 100644
--- a/clippy_lints/src/methods/unnecessary_to_owned.rs
+++ b/clippy_lints/src/methods/unnecessary_to_owned.rs
@@ -496,7 +496,7 @@ fn can_change_type<'a>(cx: &LateContext<'a>, mut expr: &'a Expr<'a>, mut ty: Ty<
             Node::Stmt(_) => return true,
             Node::Block(..) => {},
             Node::Item(item) => {
-                if let ItemKind::Fn(_, _, body_id) = &item.kind
+                if let ItemKind::Fn { body: body_id, .. } = &item.kind
                     && let output_ty = return_ty(cx, item.owner_id)
                     && rustc_hir_typeck::can_coerce(cx.tcx, cx.param_env, item.owner_id.def_id, ty, output_ty)
                 {
diff --git a/clippy_lints/src/missing_doc.rs b/clippy_lints/src/missing_doc.rs
index b6f49dcc163f..29dcbaa9e62a 100644
--- a/clippy_lints/src/missing_doc.rs
+++ b/clippy_lints/src/missing_doc.rs
@@ -192,7 +192,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc {
 
     fn check_item(&mut self, cx: &LateContext<'tcx>, it: &'tcx hir::Item<'_>) {
         match it.kind {
-            hir::ItemKind::Fn(..) => {
+            hir::ItemKind::Fn { .. } => {
                 // ignore main()
                 if it.ident.name == sym::main {
                     let at_root = cx.tcx.local_parent(it.owner_id.def_id) == CRATE_DEF_ID;
diff --git a/clippy_lints/src/missing_inline.rs b/clippy_lints/src/missing_inline.rs
index 11ff779d5316..05aa425de9ed 100644
--- a/clippy_lints/src/missing_inline.rs
+++ b/clippy_lints/src/missing_inline.rs
@@ -96,7 +96,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline {
             return;
         }
         match it.kind {
-            hir::ItemKind::Fn(..) => {
+            hir::ItemKind::Fn { .. } => {
                 let desc = "a function";
                 let attrs = cx.tcx.hir().attrs(it.hir_id());
                 check_missing_inline_attrs(cx, attrs, it.span, desc);
diff --git a/clippy_lints/src/mut_key.rs b/clippy_lints/src/mut_key.rs
index 745f81d1c51a..7abc5870d00e 100644
--- a/clippy_lints/src/mut_key.rs
+++ b/clippy_lints/src/mut_key.rs
@@ -76,7 +76,7 @@ impl_lint_pass!(MutableKeyType<'_> => [ MUTABLE_KEY_TYPE ]);
 
 impl<'tcx> LateLintPass<'tcx> for MutableKeyType<'tcx> {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'tcx>) {
-        if let hir::ItemKind::Fn(ref sig, ..) = item.kind {
+        if let hir::ItemKind::Fn { ref sig, .. } = item.kind {
             self.check_sig(cx, item.owner_id.def_id, sig.decl);
         }
     }
diff --git a/clippy_lints/src/no_effect.rs b/clippy_lints/src/no_effect.rs
index 7feff7e4d3f1..ccd507580445 100644
--- a/clippy_lints/src/no_effect.rs
+++ b/clippy_lints/src/no_effect.rs
@@ -144,7 +144,7 @@ impl NoEffect {
                     |diag| {
                         for parent in cx.tcx.hir().parent_iter(stmt.hir_id) {
                             if let Node::Item(item) = parent.1
-                                && let ItemKind::Fn(..) = item.kind
+                                && let ItemKind::Fn { .. } = item.kind
                                 && let Node::Block(block) = cx.tcx.parent_hir_node(stmt.hir_id)
                                 && let [.., final_stmt] = block.stmts
                                 && final_stmt.hir_id == stmt.hir_id
diff --git a/clippy_lints/src/no_mangle_with_rust_abi.rs b/clippy_lints/src/no_mangle_with_rust_abi.rs
index 64587e08ddc6..9ee4e4932777 100644
--- a/clippy_lints/src/no_mangle_with_rust_abi.rs
+++ b/clippy_lints/src/no_mangle_with_rust_abi.rs
@@ -37,7 +37,7 @@ declare_lint_pass!(NoMangleWithRustAbi => [NO_MANGLE_WITH_RUST_ABI]);
 
 impl<'tcx> LateLintPass<'tcx> for NoMangleWithRustAbi {
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) {
-        if let ItemKind::Fn(fn_sig, _, _) = &item.kind {
+        if let ItemKind::Fn { sig: fn_sig, .. } = &item.kind {
             let attrs = cx.tcx.hir().attrs(item.hir_id());
             let mut app = Applicability::MaybeIncorrect;
             let fn_snippet = snippet_with_applicability(cx, fn_sig.span.with_hi(item.ident.span.lo()), "..", &mut app);
diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs
index b674b01406d3..a86926d8416c 100644
--- a/clippy_lints/src/ptr.rs
+++ b/clippy_lints/src/ptr.rs
@@ -189,7 +189,7 @@ impl<'tcx> LateLintPass<'tcx> for Ptr {
         let mut parents = hir.parent_iter(body.value.hir_id);
         let (item_id, sig, is_trait_item) = match parents.next() {
             Some((_, Node::Item(i))) => {
-                if let ItemKind::Fn(sig, ..) = &i.kind {
+                if let ItemKind::Fn { sig, .. } = &i.kind {
                     (i.owner_id, sig, false)
                 } else {
                     return;
diff --git a/clippy_lints/src/returns.rs b/clippy_lints/src/returns.rs
index aeff31d02d26..dfaee8cc3054 100644
--- a/clippy_lints/src/returns.rs
+++ b/clippy_lints/src/returns.rs
@@ -204,7 +204,7 @@ impl<'tcx> LateLintPass<'tcx> for Return {
 
             // Ensure this is not the final stmt, otherwise removing it would cause a compile error
             && let OwnerNode::Item(item) = cx.tcx.hir_owner_node(cx.tcx.hir().get_parent_item(expr.hir_id))
-            && let ItemKind::Fn(_, _, body) = item.kind
+            && let ItemKind::Fn { body, .. } = item.kind
             && let block = cx.tcx.hir().body(body).value
             && let ExprKind::Block(block, _) = block.kind
             && !is_inside_let_else(cx.tcx, expr)
diff --git a/clippy_lints/src/unnecessary_box_returns.rs b/clippy_lints/src/unnecessary_box_returns.rs
index 34df1d5560a1..4158050f969a 100644
--- a/clippy_lints/src/unnecessary_box_returns.rs
+++ b/clippy_lints/src/unnecessary_box_returns.rs
@@ -130,9 +130,9 @@ impl LateLintPass<'_> for UnnecessaryBoxReturns {
     }
 
     fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) {
-        let ItemKind::Fn(signature, ..) = &item.kind else {
+        let ItemKind::Fn { sig, .. } = &item.kind else {
             return;
         };
-        self.check_fn_item(cx, signature.decl, item.owner_id.def_id, item.ident.name);
+        self.check_fn_item(cx, sig.decl, item.owner_id.def_id, item.ident.name);
     }
 }
diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs
index d2970c93f8e9..85869fb8ec4f 100644
--- a/clippy_lints/src/utils/author.rs
+++ b/clippy_lints/src/utils/author.rs
@@ -712,6 +712,12 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
                 kind!("Ref({pat}, Mutability::{muta:?})");
                 self.pat(pat);
             },
+            PatKind::Guard(pat, cond) => {
+                bind!(self, pat, cond);
+                kind!("Guard({pat}, {cond})");
+                self.pat(pat);
+                self.expr(cond);
+            },
             PatKind::Lit(lit_expr) => {
                 bind!(self, lit_expr);
                 kind!("Lit({lit_expr})");
diff --git a/clippy_utils/Cargo.toml b/clippy_utils/Cargo.toml
index 945827c98c17..7fa070cd226b 100644
--- a/clippy_utils/Cargo.toml
+++ b/clippy_utils/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "clippy_utils"
 # begin autogenerated version
-version = "0.1.85"
+version = "0.1.86"
 # end autogenerated version
 edition = "2021"
 description = "Helpful tools for writing lints, provided as they are used in Clippy"
diff --git a/clippy_utils/README.md b/clippy_utils/README.md
index 73fefbcd5705..c267b804124a 100644
--- a/clippy_utils/README.md
+++ b/clippy_utils/README.md
@@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain:
 
 <!-- begin autogenerated nightly -->
 ```
-nightly-2024-12-26
+nightly-2025-01-09
 ```
 <!-- end autogenerated nightly -->
 
diff --git a/clippy_utils/src/check_proc_macro.rs b/clippy_utils/src/check_proc_macro.rs
index b71b53ea3bbf..68e7f807bf51 100644
--- a/clippy_utils/src/check_proc_macro.rs
+++ b/clippy_utils/src/check_proc_macro.rs
@@ -245,7 +245,7 @@ fn item_search_pat(item: &Item<'_>) -> (Pat, Pat) {
         ItemKind::ExternCrate(_) => (Pat::Str("extern"), Pat::Str(";")),
         ItemKind::Static(..) => (Pat::Str("static"), Pat::Str(";")),
         ItemKind::Const(..) => (Pat::Str("const"), Pat::Str(";")),
-        ItemKind::Fn(sig, ..) => (fn_header_search_pat(sig.header), Pat::Str("")),
+        ItemKind::Fn { sig, .. } => (fn_header_search_pat(sig.header), Pat::Str("")),
         ItemKind::ForeignMod { .. } => (Pat::Str("extern"), Pat::Str("}")),
         ItemKind::TyAlias(..) => (Pat::Str("type"), Pat::Str(";")),
         ItemKind::Enum(..) => (Pat::Str("enum"), Pat::Str("}")),
diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs
index dce24d26f2ae..30c24b6cd269 100644
--- a/clippy_utils/src/hir_utils.rs
+++ b/clippy_utils/src/hir_utils.rs
@@ -1104,6 +1104,10 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 self.hash_pat(pat);
                 std::mem::discriminant(&mu).hash(&mut self.s);
             },
+            PatKind::Guard(pat, guard) => {
+                self.hash_pat(pat);
+                self.hash_expr(guard);
+            },
             PatKind::Slice(l, m, r) => {
                 for pat in l {
                     self.hash_pat(pat);
diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index 3521348ff0c6..a0de9a76a0ef 100644
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -1397,7 +1397,7 @@ pub fn get_enclosing_block<'tcx>(cx: &LateContext<'tcx>, hir_id: HirId) -> Optio
     enclosing_node.and_then(|node| match node {
         Node::Block(block) => Some(block),
         Node::Item(&Item {
-            kind: ItemKind::Fn(_, _, eid),
+            kind: ItemKind::Fn { body: eid, .. },
             ..
         })
         | Node::ImplItem(&ImplItem {
@@ -1776,7 +1776,7 @@ pub fn is_refutable(cx: &LateContext<'_>, pat: &Pat<'_>) -> bool {
                 },
             }
         },
-        PatKind::Lit(..) | PatKind::Range(..) | PatKind::Err(_) | PatKind::Deref(_) => true,
+        PatKind::Lit(..) | PatKind::Range(..) | PatKind::Err(_) | PatKind::Deref(_) | PatKind::Guard(..) => true,
     }
 }
 
@@ -2564,7 +2564,7 @@ pub fn is_in_test_function(tcx: TyCtxt<'_>, id: HirId) -> bool {
             // function scope
             .any(|(_id, node)| {
                 if let Node::Item(item) = node {
-                    if let ItemKind::Fn(_, _, _) = item.kind {
+                    if let ItemKind::Fn { .. } = item.kind {
                         // Note that we have sorted the item names in the visitor,
                         // so the binary_search gets the same as `contains`, but faster.
                         return names.binary_search(&item.ident.name).is_ok();
@@ -2721,7 +2721,7 @@ impl<'tcx> ExprUseCtxt<'tcx> {
             }) => ExprUseNode::ConstStatic(owner_id),
 
             Node::Item(&Item {
-                kind: ItemKind::Fn(..),
+                kind: ItemKind::Fn { .. },
                 owner_id,
                 ..
             })
diff --git a/rust-toolchain b/rust-toolchain
index 1000d90f52a5..b1f0a82b1f47 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,6 +1,6 @@
 [toolchain]
 # begin autogenerated nightly
-channel = "nightly-2024-12-26"
+channel = "nightly-2025-01-09"
 # end autogenerated nightly
 components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"]
 profile = "minimal"
diff --git a/tests/ui-internal/custom_ice_message.stderr b/tests/ui-internal/custom_ice_message.stderr
index b99e8c0e76f0..ff178924bd15 100644
--- a/tests/ui-internal/custom_ice_message.stderr
+++ b/tests/ui-internal/custom_ice_message.stderr
@@ -1,3 +1,4 @@
+
 thread '<unnamed>' panicked at clippy_lints/src/utils/internal_lints/produce_ice.rs:
 Would you like some help with that?
 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
diff --git a/tests/ui-toml/disallowed_macros/disallowed_macros.stderr b/tests/ui-toml/disallowed_macros/disallowed_macros.stderr
index 2e3386628b4d..6a6c6168a1f5 100644
--- a/tests/ui-toml/disallowed_macros/disallowed_macros.stderr
+++ b/tests/ui-toml/disallowed_macros/disallowed_macros.stderr
@@ -1,12 +1,3 @@
-error: use of a disallowed macro `std::vec`
-  --> tests/ui-toml/disallowed_macros/disallowed_macros.rs:16:5
-   |
-LL |     vec![1, 2, 3];
-   |     ^^^^^^^^^^^^^
-   |
-   = note: `-D clippy::disallowed-macros` implied by `-D warnings`
-   = help: to override `-D warnings` add `#[allow(clippy::disallowed_macros)]`
-
 error: use of a disallowed macro `serde::Serialize`
   --> tests/ui-toml/disallowed_macros/disallowed_macros.rs:18:14
    |
@@ -14,6 +5,8 @@ LL |     #[derive(Serialize)]
    |              ^^^^^^^^^
    |
    = note: no serializing
+   = note: `-D clippy::disallowed-macros` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::disallowed_macros)]`
 
 error: use of a disallowed macro `macros::attr`
   --> tests/ui-toml/disallowed_macros/disallowed_macros.rs:31:1
@@ -47,6 +40,12 @@ error: use of a disallowed macro `std::cfg`
 LL |     cfg!(unix);
    |     ^^^^^^^^^^
 
+error: use of a disallowed macro `std::vec`
+  --> tests/ui-toml/disallowed_macros/disallowed_macros.rs:16:5
+   |
+LL |     vec![1, 2, 3];
+   |     ^^^^^^^^^^^^^
+
 error: use of a disallowed macro `macros::expr`
   --> tests/ui-toml/disallowed_macros/disallowed_macros.rs:21:13
    |