error[E0232]: `#[rustc_on_unimplemented]` requires a value | |
--> $DIR/E0232.rs:13:1 | |
| | |
LL | #[rustc_on_unimplemented] | |
| ^^^^^^^^^^^^^^^^^^^^^^^^^ value required here | |
| | |
= note: eg `#[rustc_on_unimplemented = "foo"]` | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0232`. |