Unignore parenting

Author: aerooneqq

compiler/rustc_hir/src/hir.rs

@@ -1623,7 +1623,6 @@ pub struct OwnerInfo<'hir> {
     /// Contents of the HIR.
     pub nodes: OwnerNodes<'hir>,
     /// Map from each nested owner to its parent's local id.
-    #[stable_hasher(ignore)]
     pub parenting: LocalDefIdMap<ItemLocalId>,
     /// Collected attributes of the HIR nodes.
     pub attrs: AttributeMap<'hir>,

compiler/rustc_middle/src/hir/mod.rs

@@ -458,7 +458,6 @@ pub struct ProjectedOwnerInfo<'tcx> {
     pub nodes: &'tcx OwnerNodes<'tcx>,
 
     /// Map from each nested owner to its parent's local id.
-    #[stable_hasher(ignore)]
     pub parenting: &'tcx LocalDefIdMap<ItemLocalId>,
 
     /// Map indicating what traits are in scope for places where this