1 error[E0658]: diagnostic items compiler internal support for linting
2 --> $DIR/diagnostic_item.rs:1:1
4 LL | #[rustc_diagnostic_item = "foomp"]
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
7 = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0658`.