error: invalid fragment specifier `t_ty` --> $DIR/unused-macro-with-bad-frag-spec.rs:6:6 | LL | ($wrong:t_ty) => () | ^^^^^^^^^^^ | = help: valid fragment specifiers are `ident`, `block`, `stmt`, `expr`, `pat`, `ty`, `lifetime`, `literal`, `path`, `meta`, `tt`, `item` and `vis` error: aborting due to 1 previous error