Cache better

Author: compiler-errors

compiler/rustc_middle/src/query/mod.rs

@@ -2313,6 +2313,8 @@ rustc_queries! {
         key: (LocalDefId, DefId)
     ) -> Result<(), ErrorGuaranteed> {
         desc { |tcx| "checking assoc item `{}` is compatible with trait definition", tcx.def_path_str(key.0) }
+        cache_on_disk_if { true }
+        ensure_forwards_result_if_red
     }
 
     query deduced_param_attrs(def_id: DefId) -> &'tcx [ty::DeducedParamAttrs] {

compiler/rustc_ty_utils/src/instance.rs

@@ -217,7 +217,7 @@ fn resolve_associated_item<'tcx>(
             if trait_item_id != leaf_def.item.def_id
                 && let Some(leaf_def_item) = leaf_def.item.def_id.as_local()
             {
-                tcx.compare_impl_item((leaf_def_item, trait_item_id))?;
+                tcx.ensure().compare_impl_item((leaf_def_item, trait_item_id))?;
             }
 
             Some(ty::Instance::new(leaf_def.item.def_id, args))