incr.comp.: Add some missing DepNode [input] annotations.

src/librustc/dep_graph/dep_node.rs

@@ -562,7 +562,7 @@ define_dep_nodes!( <'tcx>
     [] IsPanicRuntime(CrateNum),
     [] IsCompilerBuiltins(CrateNum),
     [] HasGlobalAllocator(CrateNum),
-    [] ExternCrate(DefId),
+    [input] ExternCrate(DefId),
     [eval_always] LintLevels,
     [] Specializes { impl1: DefId, impl2: DefId },
     [input] InScopeTraits(DefIndex),
@@ -602,8 +602,8 @@ define_dep_nodes!( <'tcx>
     [] MissingLangItems(CrateNum),
     [] ExternConstBody(DefId),
     [] VisibleParentMap,
-    [] MissingExternCrateItem(CrateNum),
-    [] UsedCrateSource(CrateNum),
+    [input] MissingExternCrateItem(CrateNum),
+    [input] UsedCrateSource(CrateNum),
     [input] PostorderCnums,
     [input] HasCloneClosures(CrateNum),
     [input] HasCopyClosures(CrateNum),
@@ -619,7 +619,7 @@ define_dep_nodes!( <'tcx>
     [input] Freevars(DefId),
     [input] MaybeUnusedTraitImport(DefId),
     [input] MaybeUnusedExternCrates,
-    [] StabilityIndex,
+    [eval_always] StabilityIndex,
     [input] AllCrateNums,
     [] ExportedSymbols(CrateNum),
     [eval_always] CollectAndPartitionTranslationItems,

src/librustc/ty/context.rs

@@ -1124,11 +1124,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
     }
 
     pub fn stability(self) -> Rc<stability::Index<'tcx>> {
-        // FIXME(#42293) we should actually track this, but fails too many tests
-        // today.
-        self.dep_graph.with_ignore(|| {
-            self.stability_index(LOCAL_CRATE)
-        })
+        self.stability_index(LOCAL_CRATE)
     }
 
     pub fn crates(self) -> Rc<Vec<CrateNum>> {