error: cannot find attribute `dummy` in this scope --> $DIR/derive-helper-legacy-spurious.rs:3:4 | LL | #![dummy] | ^^^^^ error: cannot find attribute `empty_helper` in this scope --> $DIR/derive-helper-legacy-spurious.rs:9:3 | LL | #[empty_helper] | ^^^^^^^^^^^^ error: aborting due to 2 previous errors