{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"(ty::Ref(_,"}]}
        (ty::Ref(_, a, _), ty::Ref(_, b, _)) | (ty::RawPtr(a, _), ty::RawPtr(b, _)) => {
    match (from_ty.kind(), to_ty.kind()) {
            assert_assignable(fx, *a, *b, limit - 1);