error[E0774]: `derive` may only be applied to `struct`s, `enum`s and `union`s --> $DIR/derive-on-trait-item-or-impl-item.rs:2:5 | LL | #[derive(Clone)] | ^^^^^^^^^^^^^^^^ not applicable here LL | LL | type Bar; | --------- not a `struct`, `enum` or `union` error[E0774]: `derive` may only be applied to `struct`s, `enum`s and `union`s --> $DIR/derive-on-trait-item-or-impl-item.rs:10:5 | LL | #[derive(Clone)] | ^^^^^^^^^^^^^^^^ not applicable here LL | LL | fn bar(&self) {} | ---------------- not a `struct`, `enum` or `union` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0774`.