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