| error[E0232]: `#[rustc_on_unimplemented]` requires a value | |
| --> $DIR/E0232.rs:3:1 | |
| | | |
| LL | #[rustc_on_unimplemented] | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^ value required here | |
| | | |
| = note: eg `#[rustc_on_unimplemented(message="foo")]` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0232`. |