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-rw-r--r--compiler/rustc_codegen_ssa/src/codegen_attrs.rs2
-rw-r--r--compiler/rustc_hir_analysis/src/check/compare_impl_item.rs10
-rw-r--r--compiler/rustc_hir_analysis/src/check/wfcheck.rs8
-rw-r--r--compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs4
-rw-r--r--compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs2
-rw-r--r--compiler/rustc_hir_typeck/src/lib.rs2
-rw-r--r--compiler/rustc_hir_typeck/src/method/probe.rs4
-rw-r--r--compiler/rustc_lint/src/nonstandard_style.rs4
-rw-r--r--compiler/rustc_metadata/src/rmeta/encoder.rs10
-rw-r--r--compiler/rustc_metadata/src/rmeta/table.rs4
-rw-r--r--compiler/rustc_middle/src/ty/assoc.rs12
-rw-r--r--compiler/rustc_middle/src/ty/instance.rs2
-rw-r--r--compiler/rustc_middle/src/ty/mod.rs4
-rw-r--r--compiler/rustc_middle/src/util/call_kind.rs4
-rw-r--r--compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/static_impl_trait.rs4
-rw-r--r--compiler/rustc_ty_utils/src/assoc.rs8
-rw-r--r--compiler/rustc_ty_utils/src/ty.rs2
-rw-r--r--src/librustdoc/clean/mod.rs20
-rw-r--r--src/librustdoc/clean/types.rs4
-rw-r--r--src/tools/clippy/clippy_lints/src/missing_inline.rs6
-rw-r--r--src/tools/clippy/clippy_utils/src/lib.rs4
21 files changed, 59 insertions, 61 deletions
diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
index a5bd3adbcdd..8f3592090c6 100644
--- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
+++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs
@@ -710,7 +710,7 @@ pub fn check_tied_features(
 /// applied to the method prototype.
 fn should_inherit_track_caller(tcx: TyCtxt<'_>, def_id: DefId) -> bool {
     if let Some(impl_item) = tcx.opt_associated_item(def_id)
-        && let ty::AssocItemContainer::ImplContainer = impl_item.container
+        && let ty::AssocItemContainer::Impl = impl_item.container
         && let Some(trait_item) = impl_item.trait_item_def_id
     {
         return tcx.codegen_fn_attrs(trait_item).flags.intersects(CodegenFnAttrFlags::TRACK_CALLER);
diff --git a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
index dee76c66663..c62028616e1 100644
--- a/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
+++ b/compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
@@ -1189,8 +1189,8 @@ fn compare_self_type<'tcx>(
 
     let self_string = |method: ty::AssocItem| {
         let untransformed_self_ty = match method.container {
-            ty::ImplContainer => impl_trait_ref.self_ty(),
-            ty::TraitContainer => tcx.types.self_param,
+            ty::AssocItemContainer::Impl => impl_trait_ref.self_ty(),
+            ty::AssocItemContainer::Trait => tcx.types.self_param,
         };
         let self_arg_ty = tcx.fn_sig(method.def_id).instantiate_identity().input(0);
         let param_env = ty::ParamEnv::reveal_all();
@@ -2224,10 +2224,8 @@ fn param_env_with_gat_bounds<'tcx>(
 
     for impl_ty in impl_tys_to_install {
         let trait_ty = match impl_ty.container {
-            ty::AssocItemContainer::TraitContainer => impl_ty,
-            ty::AssocItemContainer::ImplContainer => {
-                tcx.associated_item(impl_ty.trait_item_def_id.unwrap())
-            }
+            ty::AssocItemContainer::Trait => impl_ty,
+            ty::AssocItemContainer::Impl => tcx.associated_item(impl_ty.trait_item_def_id.unwrap()),
         };
 
         let mut bound_vars: smallvec::SmallVec<[ty::BoundVariableKind; 8]> =
diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
index bf7cc713841..3a6ea545741 100644
--- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs
+++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs
@@ -1048,8 +1048,10 @@ fn check_associated_item(
             .coherent_trait(tcx.parent(item.trait_item_def_id.unwrap_or(item_id.into())))?;
 
         let self_ty = match item.container {
-            ty::TraitContainer => tcx.types.self_param,
-            ty::ImplContainer => tcx.type_of(item.container_id(tcx)).instantiate_identity(),
+            ty::AssocItemContainer::Trait => tcx.types.self_param,
+            ty::AssocItemContainer::Impl => {
+                tcx.type_of(item.container_id(tcx)).instantiate_identity()
+            }
         };
 
         match item.kind {
@@ -1072,7 +1074,7 @@ fn check_associated_item(
                 check_method_receiver(wfcx, hir_sig, item, self_ty)
             }
             ty::AssocKind::Type => {
-                if let ty::AssocItemContainer::TraitContainer = item.container {
+                if let ty::AssocItemContainer::Trait = item.container {
                     check_associated_type_bounds(wfcx, item, span)
                 }
                 if item.defaultness(tcx).has_value() {
diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs
index 2753bee499b..f026613f4b5 100644
--- a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs
+++ b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs
@@ -1025,7 +1025,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 let container_id = assoc_item.container_id(tcx);
                 debug!(?def_id, ?container, ?container_id);
                 match container {
-                    ty::TraitContainer => {
+                    ty::AssocItemContainer::Trait => {
                         if let Err(e) = callee::check_legal_trait_for_method_call(
                             tcx,
                             path_span,
@@ -1037,7 +1037,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             self.set_tainted_by_errors(e);
                         }
                     }
-                    ty::ImplContainer => {
+                    ty::AssocItemContainer::Impl => {
                         if segments.len() == 1 {
                             // `<T>::assoc` will end up here, and so
                             // can `T::assoc`. If this came from an
diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
index 3f703c2fcf6..23842b3014b 100644
--- a/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
+++ b/compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
@@ -1796,7 +1796,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 false,
                 |did| {
                     let assoc_item = self.tcx.associated_item(did);
-                    assoc_item.container == ty::AssocItemContainer::TraitContainer
+                    assoc_item.container == ty::AssocItemContainer::Trait
                         && assoc_item.container_id(self.tcx) == clone_trait_did
                 },
             )
diff --git a/compiler/rustc_hir_typeck/src/lib.rs b/compiler/rustc_hir_typeck/src/lib.rs
index d8b63eef577..f5987a11fa5 100644
--- a/compiler/rustc_hir_typeck/src/lib.rs
+++ b/compiler/rustc_hir_typeck/src/lib.rs
@@ -239,7 +239,7 @@ fn infer_type_if_missing<'tcx>(fcx: &FnCtxt<'_, 'tcx>, node: Node<'tcx>) -> Opti
     let expected_type = if let Some(&hir::Ty { kind: hir::TyKind::Infer, span, .. }) = node.ty() {
         if let Some(item) = tcx.opt_associated_item(def_id.into())
             && let ty::AssocKind::Const = item.kind
-            && let ty::ImplContainer = item.container
+            && let ty::AssocItemContainer::Impl = item.container
             && let Some(trait_item_def_id) = item.trait_item_def_id
         {
             let impl_def_id = item.container_id(tcx);
diff --git a/compiler/rustc_hir_typeck/src/method/probe.rs b/compiler/rustc_hir_typeck/src/method/probe.rs
index eb5581f421b..640729576fc 100644
--- a/compiler/rustc_hir_typeck/src/method/probe.rs
+++ b/compiler/rustc_hir_typeck/src/method/probe.rs
@@ -480,7 +480,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 ProbeScope::Single(def_id) => {
                     let item = self.tcx.associated_item(def_id);
                     // FIXME(fn_delegation): Delegation to inherent methods is not yet supported.
-                    assert_eq!(item.container, AssocItemContainer::TraitContainer);
+                    assert_eq!(item.container, AssocItemContainer::Trait);
 
                     let trait_def_id = self.tcx.parent(def_id);
                     let trait_span = self.tcx.def_span(trait_def_id);
@@ -1406,7 +1406,7 @@ impl<'tcx> Pick<'tcx> {
                         tcx.def_path_str(self.item.def_id),
                     ));
                 }
-                (ty::AssocKind::Const, ty::AssocItemContainer::TraitContainer) => {
+                (ty::AssocKind::Const, ty::AssocItemContainer::Trait) => {
                     let def_id = self.item.container_id(tcx);
                     lint.span_suggestion(
                         span,
diff --git a/compiler/rustc_lint/src/nonstandard_style.rs b/compiler/rustc_lint/src/nonstandard_style.rs
index c5f0b94327f..4d8ebf2909e 100644
--- a/compiler/rustc_lint/src/nonstandard_style.rs
+++ b/compiler/rustc_lint/src/nonstandard_style.rs
@@ -26,8 +26,8 @@ pub(crate) enum MethodLateContext {
 pub(crate) fn method_context(cx: &LateContext<'_>, id: LocalDefId) -> MethodLateContext {
     let item = cx.tcx.associated_item(id);
     match item.container {
-        ty::TraitContainer => MethodLateContext::TraitAutoImpl,
-        ty::ImplContainer => match cx.tcx.impl_trait_ref(item.container_id(cx.tcx)) {
+        ty::AssocItemContainer::Trait => MethodLateContext::TraitAutoImpl,
+        ty::AssocItemContainer::Impl => match cx.tcx.impl_trait_ref(item.container_id(cx.tcx)) {
             Some(_) => MethodLateContext::TraitImpl,
             None => MethodLateContext::PlainImpl,
         },
diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs
index 7277039bb7d..b5391247cea 100644
--- a/compiler/rustc_metadata/src/rmeta/encoder.rs
+++ b/compiler/rustc_metadata/src/rmeta/encoder.rs
@@ -1203,8 +1203,8 @@ fn should_encode_type(tcx: TyCtxt<'_>, def_id: LocalDefId, def_kind: DefKind) ->
         DefKind::AssocTy => {
             let assoc_item = tcx.associated_item(def_id);
             match assoc_item.container {
-                ty::AssocItemContainer::ImplContainer => true,
-                ty::AssocItemContainer::TraitContainer => assoc_item.defaultness(tcx).has_value(),
+                ty::AssocItemContainer::Impl => true,
+                ty::AssocItemContainer::Trait => assoc_item.defaultness(tcx).has_value(),
             }
         }
         DefKind::TyParam => {
@@ -1336,7 +1336,7 @@ fn should_encode_const(def_kind: DefKind) -> bool {
 
 fn should_encode_fn_impl_trait_in_trait<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId) -> bool {
     if let Some(assoc_item) = tcx.opt_associated_item(def_id)
-        && assoc_item.container == ty::AssocItemContainer::TraitContainer
+        && assoc_item.container == ty::AssocItemContainer::Trait
         && assoc_item.kind == ty::AssocKind::Fn
     {
         true
@@ -1649,7 +1649,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
         self.tables.assoc_container.set_some(def_id.index, item.container);
 
         match item.container {
-            AssocItemContainer::TraitContainer => {
+            AssocItemContainer::Trait => {
                 if let ty::AssocKind::Type = item.kind {
                     self.encode_explicit_item_bounds(def_id);
                     self.encode_explicit_item_super_predicates(def_id);
@@ -1659,7 +1659,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
                     }
                 }
             }
-            AssocItemContainer::ImplContainer => {
+            AssocItemContainer::Impl => {
                 if let Some(trait_item_def_id) = item.trait_item_def_id {
                     self.tables.trait_item_def_id.set_some(def_id.index, trait_item_def_id.into());
                 }
diff --git a/compiler/rustc_metadata/src/rmeta/table.rs b/compiler/rustc_metadata/src/rmeta/table.rs
index 3a6f3543317..63abd2be9a5 100644
--- a/compiler/rustc_metadata/src/rmeta/table.rs
+++ b/compiler/rustc_metadata/src/rmeta/table.rs
@@ -223,8 +223,8 @@ fixed_size_enum! {
 
 fixed_size_enum! {
     ty::AssocItemContainer {
-        ( TraitContainer )
-        ( ImplContainer  )
+        ( Trait )
+        ( Impl  )
     }
 }
 
diff --git a/compiler/rustc_middle/src/ty/assoc.rs b/compiler/rustc_middle/src/ty/assoc.rs
index 3137fe9bd1d..62157d9bfe2 100644
--- a/compiler/rustc_middle/src/ty/assoc.rs
+++ b/compiler/rustc_middle/src/ty/assoc.rs
@@ -10,8 +10,8 @@ use crate::ty;
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, HashStable, Hash, Encodable, Decodable)]
 pub enum AssocItemContainer {
-    TraitContainer,
-    ImplContainer,
+    Trait,
+    Impl,
 }
 
 /// Information about an associated item
@@ -63,16 +63,16 @@ impl AssocItem {
     #[inline]
     pub fn trait_container(&self, tcx: TyCtxt<'_>) -> Option<DefId> {
         match self.container {
-            AssocItemContainer::ImplContainer => None,
-            AssocItemContainer::TraitContainer => Some(tcx.parent(self.def_id)),
+            AssocItemContainer::Impl => None,
+            AssocItemContainer::Trait => Some(tcx.parent(self.def_id)),
         }
     }
 
     #[inline]
     pub fn impl_container(&self, tcx: TyCtxt<'_>) -> Option<DefId> {
         match self.container {
-            AssocItemContainer::ImplContainer => Some(tcx.parent(self.def_id)),
-            AssocItemContainer::TraitContainer => None,
+            AssocItemContainer::Impl => Some(tcx.parent(self.def_id)),
+            AssocItemContainer::Trait => None,
         }
     }
 
diff --git a/compiler/rustc_middle/src/ty/instance.rs b/compiler/rustc_middle/src/ty/instance.rs
index e237d382900..7ee13bc1725 100644
--- a/compiler/rustc_middle/src/ty/instance.rs
+++ b/compiler/rustc_middle/src/ty/instance.rs
@@ -690,7 +690,7 @@ impl<'tcx> Instance<'tcx> {
                         && !matches!(
                             tcx.opt_associated_item(def),
                             Some(ty::AssocItem {
-                                container: ty::AssocItemContainer::TraitContainer,
+                                container: ty::AssocItemContainer::Trait,
                                 ..
                             })
                         )
diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs
index 6d7ed56263b..df47ac2099a 100644
--- a/compiler/rustc_middle/src/ty/mod.rs
+++ b/compiler/rustc_middle/src/ty/mod.rs
@@ -55,9 +55,7 @@ use tracing::{debug, instrument};
 pub use vtable::*;
 use {rustc_ast as ast, rustc_attr as attr, rustc_hir as hir};
 
-pub use self::AssocItemContainer::*;
 pub use self::BorrowKind::*;
-pub use self::IntVarValue::*;
 pub use self::closure::{
     BorrowKind, CAPTURE_STRUCT_LOCAL, CaptureInfo, CapturedPlace, ClosureTypeInfo,
     MinCaptureInformationMap, MinCaptureList, RootVariableMinCaptureList, UpvarCapture, UpvarId,
@@ -2074,7 +2072,7 @@ impl<'tcx> TyCtxt<'tcx> {
         let Some(item) = self.opt_associated_item(def_id) else {
             return false;
         };
-        if item.container != ty::AssocItemContainer::ImplContainer {
+        if item.container != ty::AssocItemContainer::Impl {
             return false;
         }
 
diff --git a/compiler/rustc_middle/src/util/call_kind.rs b/compiler/rustc_middle/src/util/call_kind.rs
index fe30cbfae4e..ed27a880562 100644
--- a/compiler/rustc_middle/src/util/call_kind.rs
+++ b/compiler/rustc_middle/src/util/call_kind.rs
@@ -72,8 +72,8 @@ pub fn call_kind<'tcx>(
     let parent = tcx.opt_associated_item(method_did).and_then(|assoc| {
         let container_id = assoc.container_id(tcx);
         match assoc.container {
-            AssocItemContainer::ImplContainer => tcx.trait_id_of_impl(container_id),
-            AssocItemContainer::TraitContainer => Some(container_id),
+            AssocItemContainer::Impl => tcx.trait_id_of_impl(container_id),
+            AssocItemContainer::Trait => Some(container_id),
         }
     });
 
diff --git a/compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/static_impl_trait.rs b/compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/static_impl_trait.rs
index 2b19db2c14e..808e6a50d85 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/static_impl_trait.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/infer/nice_region_error/static_impl_trait.rs
@@ -59,11 +59,11 @@ impl<'a, 'tcx> NiceRegionError<'a, 'tcx> {
                     let simple_ident = param.param.pat.simple_ident();
 
                     let (has_impl_path, impl_path) = match ctxt.assoc_item.container {
-                        AssocItemContainer::TraitContainer => {
+                        AssocItemContainer::Trait => {
                             let id = ctxt.assoc_item.container_id(tcx);
                             (true, tcx.def_path_str(id))
                         }
-                        AssocItemContainer::ImplContainer => (false, String::new()),
+                        AssocItemContainer::Impl => (false, String::new()),
                     };
 
                     let mut err = self.tcx().dcx().create_err(ButCallingIntroduces {
diff --git a/compiler/rustc_ty_utils/src/assoc.rs b/compiler/rustc_ty_utils/src/assoc.rs
index 3655fa5ae0e..f97e8d48c8e 100644
--- a/compiler/rustc_ty_utils/src/assoc.rs
+++ b/compiler/rustc_ty_utils/src/assoc.rs
@@ -140,7 +140,7 @@ fn associated_item_from_trait_item_ref(trait_item_ref: &hir::TraitItemRef) -> ty
         kind,
         def_id: owner_id.to_def_id(),
         trait_item_def_id: Some(owner_id.to_def_id()),
-        container: ty::TraitContainer,
+        container: ty::AssocItemContainer::Trait,
         fn_has_self_parameter: has_self,
         opt_rpitit_info: None,
     }
@@ -159,7 +159,7 @@ fn associated_item_from_impl_item_ref(impl_item_ref: &hir::ImplItemRef) -> ty::A
         kind,
         def_id: def_id.to_def_id(),
         trait_item_def_id: impl_item_ref.trait_item_def_id,
-        container: ty::ImplContainer,
+        container: ty::AssocItemContainer::Impl,
         fn_has_self_parameter: has_self,
         opt_rpitit_info: None,
     }
@@ -267,7 +267,7 @@ fn associated_type_for_impl_trait_in_trait(
         kind: ty::AssocKind::Type,
         def_id,
         trait_item_def_id: None,
-        container: ty::TraitContainer,
+        container: ty::AssocItemContainer::Trait,
         fn_has_self_parameter: false,
         opt_rpitit_info: Some(ImplTraitInTraitData::Trait {
             fn_def_id: fn_def_id.to_def_id(),
@@ -319,7 +319,7 @@ fn associated_type_for_impl_trait_in_impl(
         kind: ty::AssocKind::Type,
         def_id,
         trait_item_def_id: Some(trait_assoc_def_id),
-        container: ty::ImplContainer,
+        container: ty::AssocItemContainer::Impl,
         fn_has_self_parameter: false,
         opt_rpitit_info: Some(ImplTraitInTraitData::Impl { fn_def_id: impl_fn_def_id.to_def_id() }),
     });
diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs
index 731d42fc006..2127ba8a423 100644
--- a/compiler/rustc_ty_utils/src/ty.rs
+++ b/compiler/rustc_ty_utils/src/ty.rs
@@ -135,7 +135,7 @@ fn param_env(tcx: TyCtxt<'_>, def_id: DefId) -> ty::ParamEnv<'_> {
 
     if tcx.def_kind(def_id) == DefKind::AssocFn
         && let assoc_item = tcx.associated_item(def_id)
-        && assoc_item.container == ty::AssocItemContainer::TraitContainer
+        && assoc_item.container == ty::AssocItemContainer::Trait
         && assoc_item.defaultness(tcx).has_value()
     {
         let sig = tcx.fn_sig(def_id).instantiate_identity();
diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs
index c367eed53e0..00082b18a04 100644
--- a/src/librustdoc/clean/mod.rs
+++ b/src/librustdoc/clean/mod.rs
@@ -1317,8 +1317,8 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
             simplify::move_bounds_to_generic_parameters(&mut generics);
 
             let provided = match assoc_item.container {
-                ty::ImplContainer => true,
-                ty::TraitContainer => tcx.defaultness(assoc_item.def_id).has_value(),
+                ty::AssocItemContainer::Impl => true,
+                ty::AssocItemContainer::Trait => tcx.defaultness(assoc_item.def_id).has_value(),
             };
             if provided {
                 AssocConstItem(Box::new(Constant {
@@ -1335,10 +1335,10 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
 
             if assoc_item.fn_has_self_parameter {
                 let self_ty = match assoc_item.container {
-                    ty::ImplContainer => {
+                    ty::AssocItemContainer::Impl => {
                         tcx.type_of(assoc_item.container_id(tcx)).instantiate_identity()
                     }
-                    ty::TraitContainer => tcx.types.self_param,
+                    ty::AssocItemContainer::Trait => tcx.types.self_param,
                 };
                 let self_arg_ty =
                     tcx.fn_sig(assoc_item.def_id).instantiate_identity().input(0).skip_binder();
@@ -1355,13 +1355,13 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
             }
 
             let provided = match assoc_item.container {
-                ty::ImplContainer => true,
-                ty::TraitContainer => assoc_item.defaultness(tcx).has_value(),
+                ty::AssocItemContainer::Impl => true,
+                ty::AssocItemContainer::Trait => assoc_item.defaultness(tcx).has_value(),
             };
             if provided {
                 let defaultness = match assoc_item.container {
-                    ty::ImplContainer => Some(assoc_item.defaultness(tcx)),
-                    ty::TraitContainer => None,
+                    ty::AssocItemContainer::Impl => Some(assoc_item.defaultness(tcx)),
+                    ty::AssocItemContainer::Trait => None,
                 };
                 MethodItem(item, defaultness)
             } else {
@@ -1392,7 +1392,7 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
             }
 
             let mut predicates = tcx.explicit_predicates_of(assoc_item.def_id).predicates;
-            if let ty::TraitContainer = assoc_item.container {
+            if let ty::AssocItemContainer::Trait = assoc_item.container {
                 let bounds = tcx.explicit_item_bounds(assoc_item.def_id).iter_identity_copied();
                 predicates = tcx.arena.alloc_from_iter(bounds.chain(predicates.iter().copied()));
             }
@@ -1403,7 +1403,7 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
                 });
             simplify::move_bounds_to_generic_parameters(&mut generics);
 
-            if let ty::TraitContainer = assoc_item.container {
+            if let ty::AssocItemContainer::Trait = assoc_item.container {
                 // Move bounds that are (likely) directly attached to the associated type
                 // from the where-clause to the associated type.
                 // There is no guarantee that this is what the user actually wrote but we have
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs
index d49b4320db6..e5c9539b5e7 100644
--- a/src/librustdoc/clean/types.rs
+++ b/src/librustdoc/clean/types.rs
@@ -703,8 +703,8 @@ impl Item {
             | TyMethodItem(..) | MethodItem(..) => {
                 let assoc_item = tcx.associated_item(def_id);
                 let is_trait_item = match assoc_item.container {
-                    ty::TraitContainer => true,
-                    ty::ImplContainer => {
+                    ty::AssocItemContainer::Trait => true,
+                    ty::AssocItemContainer::Impl => {
                         // Trait impl items always inherit the impl's visibility --
                         // we don't want to show `pub`.
                         tcx.impl_trait_ref(tcx.parent(assoc_item.def_id)).is_some()
diff --git a/src/tools/clippy/clippy_lints/src/missing_inline.rs b/src/tools/clippy/clippy_lints/src/missing_inline.rs
index f95a0f63fab..e587d695c84 100644
--- a/src/tools/clippy/clippy_lints/src/missing_inline.rs
+++ b/src/tools/clippy/clippy_lints/src/missing_inline.rs
@@ -2,6 +2,7 @@ use clippy_utils::diagnostics::span_lint;
 use rustc_ast::ast;
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
+use rustc_middle::ty::AssocItemContainer;
 use rustc_session::declare_lint_pass;
 use rustc_span::{Span, sym};
 
@@ -138,7 +139,6 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline {
     }
 
     fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx hir::ImplItem<'_>) {
-        use rustc_middle::ty::{ImplContainer, TraitContainer};
         if rustc_middle::lint::in_external_macro(cx.sess(), impl_item.span) || is_executable_or_proc_macro(cx) {
             return;
         }
@@ -156,8 +156,8 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline {
         let assoc_item = cx.tcx.associated_item(impl_item.owner_id);
         let container_id = assoc_item.container_id(cx.tcx);
         let trait_def_id = match assoc_item.container {
-            TraitContainer => Some(container_id),
-            ImplContainer => cx.tcx.impl_trait_ref(container_id).map(|t| t.skip_binder().def_id),
+            AssocItemContainer::Trait => Some(container_id),
+            AssocItemContainer::Impl => cx.tcx.impl_trait_ref(container_id).map(|t| t.skip_binder().def_id),
         };
 
         if let Some(trait_def_id) = trait_def_id {
diff --git a/src/tools/clippy/clippy_utils/src/lib.rs b/src/tools/clippy/clippy_utils/src/lib.rs
index ad85dfa2d1e..2b91f528807 100644
--- a/src/tools/clippy/clippy_utils/src/lib.rs
+++ b/src/tools/clippy/clippy_utils/src/lib.rs
@@ -3340,8 +3340,8 @@ pub fn get_path_from_caller_to_method_type<'tcx>(
     let assoc_item = tcx.associated_item(method);
     let def_id = assoc_item.container_id(tcx);
     match assoc_item.container {
-        rustc_ty::TraitContainer => get_path_to_callee(tcx, from, def_id),
-        rustc_ty::ImplContainer => {
+        rustc_ty::AssocItemContainer::Trait => get_path_to_callee(tcx, from, def_id),
+        rustc_ty::AssocItemContainer::Impl => {
             let ty = tcx.type_of(def_id).instantiate_identity();
             get_path_to_ty(tcx, from, ty, args)
         },