Arbitrary self types v2: additional comment.

This commit exists primarily to bump github CI into noticing the branch
has changed...

Author: adetaylor

Diff for: compiler/rustc_hir_analysis/src/check/wfcheck.rs

@@ -1670,6 +1670,7 @@ fn check_method_receiver<'tcx>(
     // yet to do: determine whether self_ty is NonNull or Weak, and use
     // _HELP_FOR_NONNULL and _HELP_FOR_WEAK as appropriate. No tests yet
     // exist for this.
+    // Consider also emitting 'trait not implemented' diagnostics.
     let raw_pointer = is_raw_pointer(receiver_ty);
 
     let arbitrary_self_types_pointers_enabled = tcx.features().arbitrary_self_types_pointers();