| error[E0658]: `rustc_doc_primitive` is a rustc internal attribute | |
| --> $DIR/feature-gate-doc_primitive.rs:1:1 | |
| | | |
| LL | #[rustc_doc_primitive = "usize"] | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
| | | |
| = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable | |
| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0658`. |