| error: malformed `rustc_on_unimplemented` attribute input |
| --> $DIR/issue-104140.rs:5:1 |
| | |
| LL | #[rustc_on_unimplemented] |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| help: the following are the possible correct uses |
| | |
| LL | #[rustc_on_unimplemented = "message"] |
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| LL | #[rustc_on_unimplemented(/*opt*/ message = "...", /*opt*/ label = "...", /*opt*/ note = "...")] |
| | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| error: aborting due to 1 previous error |
| |