message: No need to convert vtable before static_type_of
  Summary: Since static_type_of is a super-trait method, you can just invoke it directly.
diff: @@ -270,7 +270,7 @@ fn add_assign<'v>(lhs: Value<'v>, rhs: Value<'v>, heap: &'v Heap) -> anyhow::Res
  // mutably borrowed when we iterate over `rhs`, as they might alias.
  let lhs_aref = lhs.get_ref();
  - let lhs_ty = lhs_aref.as_dyn_any().static_type_of();
  + let lhs_ty = lhs_aref.static_type_of();
  if List::is_list_type(lhs_ty) {
  // If the value is None, that must mean its a FrozenList, thus turn it into an immutable error
  