4 files changed, 11 insertions, 14 deletions
diff --git a/compiler/rustc_ty_utils/src/consts.rs b/compiler/rustc_ty_utils/src/consts.rs
index f8ff31f971b..a9b4e1420ea 100644
--- a/compiler/rustc_ty_utils/src/consts.rs
+++ b/compiler/rustc_ty_utils/src/consts.rs
@@ -267,8 +267,8 @@ struct IsThirPolymorphic<'a, 'tcx> {
     thir: &'a thir::Thir<'tcx>,
 }
 
-fn error<'tcx>(
-    tcx: TyCtxt<'tcx>,
+fn error(
+    tcx: TyCtxt<'_>,
     sub: GenericConstantTooComplexSub,
     root_span: Span,
 ) -> Result<!, ErrorGuaranteed> {
@@ -281,8 +281,8 @@ fn error<'tcx>(
     Err(reported)
 }
 
-fn maybe_supported_error<'tcx>(
-    tcx: TyCtxt<'tcx>,
+fn maybe_supported_error(
+    tcx: TyCtxt<'_>,
     sub: GenericConstantTooComplexSub,
     root_span: Span,
 ) -> Result<!, ErrorGuaranteed> {
@@ -349,10 +349,10 @@ impl<'a, 'tcx> visit::Visitor<'a, 'tcx> for IsThirPolymorphic<'a, 'tcx> {
 }
 
 /// Builds an abstract const, do not use this directly, but use `AbstractConst::new` instead.
-pub fn thir_abstract_const<'tcx>(
-    tcx: TyCtxt<'tcx>,
+pub fn thir_abstract_const(
+    tcx: TyCtxt<'_>,
     def: ty::WithOptConstParam<LocalDefId>,
-) -> Result<Option<ty::Const<'tcx>>, ErrorGuaranteed> {
+) -> Result<Option<ty::Const<'_>>, ErrorGuaranteed> {
     if tcx.features().generic_const_exprs {
         match tcx.def_kind(def.did) {
             // FIXME(generic_const_exprs): We currently only do this for anonymous constants,
diff --git a/compiler/rustc_ty_utils/src/implied_bounds.rs b/compiler/rustc_ty_utils/src/implied_bounds.rs
index f0d8c240ea5..b7a24a22c53 100644
--- a/compiler/rustc_ty_utils/src/implied_bounds.rs
+++ b/compiler/rustc_ty_utils/src/implied_bounds.rs
@@ -6,7 +6,7 @@ pub fn provide(providers: &mut ty::query::Providers) {
     *providers = ty::query::Providers { assumed_wf_types, ..*providers };
 }
 
-fn assumed_wf_types<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId) -> &'tcx ty::List<Ty<'tcx>> {
+fn assumed_wf_types(tcx: TyCtxt<'_>, def_id: DefId) -> &ty::List<Ty<'_>> {
     match tcx.def_kind(def_id) {
         DefKind::Fn => {
             let sig = tcx.fn_sig(def_id);
diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs
index c761a4dbe45..c8c6acaa453 100644
--- a/compiler/rustc_ty_utils/src/layout.rs
+++ b/compiler/rustc_ty_utils/src/layout.rs
@@ -489,8 +489,8 @@ enum SavedLocalEligibility {
 // of any variant.
 
 /// Compute the eligibility and assignment of each local.
-fn generator_saved_local_eligibility<'tcx>(
-    info: &GeneratorLayout<'tcx>,
+fn generator_saved_local_eligibility(
+    info: &GeneratorLayout<'_>,
 ) -> (BitSet<GeneratorSavedLocal>, IndexVec<GeneratorSavedLocal, SavedLocalEligibility>) {
     use SavedLocalEligibility::*;
 
diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs
index 5279fc69a31..e2d10f550c3 100644
--- a/compiler/rustc_ty_utils/src/ty.rs
+++ b/compiler/rustc_ty_utils/src/ty.rs
@@ -225,10 +225,7 @@ fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> {
 /// that are assumed to be well-formed (because they come from the environment).
 ///
 /// Used only in chalk mode.
-fn well_formed_types_in_env<'tcx>(
-    tcx: TyCtxt<'tcx>,
-    def_id: DefId,
-) -> &'tcx ty::List<Predicate<'tcx>> {
+fn well_formed_types_in_env(tcx: TyCtxt<'_>, def_id: DefId) -> &ty::List<Predicate<'_>> {
     use rustc_hir::{ForeignItemKind, ImplItemKind, ItemKind, Node, TraitItemKind};
     use rustc_middle::ty::subst::GenericArgKind;