Apply track_caller to closure on expect_non_local()

Author: JohnTitor

compiler/rustc_hir/src/def.rs

@@ -671,7 +671,10 @@ impl<Id> Res<Id> {
 
     #[track_caller]
     pub fn expect_non_local<OtherId>(self) -> Res<OtherId> {
-        self.map_id(|_| panic!("unexpected `Res::Local`"))
+        self.map_id(
+            #[track_caller]
+            |_| panic!("unexpected `Res::Local`"),
+        )
     }
 
     pub fn macro_kind(self) -> Option<MacroKind> {

compiler/rustc_hir/src/lib.rs

@@ -3,6 +3,7 @@
 //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/hir.html
 
 #![feature(associated_type_defaults)]
+#![feature(closure_track_caller)]
 #![feature(const_btree_new)]
 #![feature(let_else)]
 #![feature(once_cell)]