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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
|
