Reduce indirect assoc parent queries

2 files changed, 2 insertions, 3 deletions

diff --git a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
index 522409a5ee5..8dd13da4fa7 100644
--- a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
+++ b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs
@@ -517,8 +517,7 @@ pub(super) fn explicit_predicates_of<'tcx>(
                 projection.args == trait_identity_args
                     // FIXME(return_type_notation): This check should be more robust
                     && !tcx.is_impl_trait_in_trait(projection.def_id)
-                    && tcx.associated_item(projection.def_id).container_id(tcx)
-                        == def_id.to_def_id()
+                    && tcx.parent(projection.def_id) == def_id.to_def_id()
             } else {
                 false
             }
diff --git a/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs b/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs
index 3e446b7c656..93b82acf621 100644
--- a/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs
+++ b/compiler/rustc_hir_analysis/src/hir_ty_lowering/errors.rs
@@ -755,7 +755,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
         let limit = if candidates.len() == 5 { 5 } else { 4 };
 
         for (index, &item) in candidates.iter().take(limit).enumerate() {
-            let impl_ = tcx.impl_of_assoc(item).unwrap();
+            let impl_ = tcx.parent(item);
 
             let note_span = if item.is_local() {
                 Some(tcx.def_span(item))