warning: duplicate derived trait name
 --> $DIR/derive_duplicate_item.rs:3:24
  |
3 | #[mocked(derive(Clone, Clone))]
  |                        ^^^^^

error: Warnings verification
 --> $DIR/derive_duplicate_item.rs:7:5
  |
7 |     compile_error!("Warnings verification");
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^