1 error: `ref` directly on a function argument is ignored. Consider using a reference type instead.
2 --> $DIR/toplevel_ref_arg_non_rustfix.rs:4:15
4 LL | fn the_answer(ref mut x: u8) {
7 = note: `-D clippy::toplevel-ref-arg` implied by `-D warnings`
9 error: aborting due to previous error