error: malformed `coverage` attribute input --> $DIR/bad-attr-ice.rs:10:1 | LL | #[coverage] | ^^^^^^^^^^^ | help: the following are the possible correct uses | LL | #[coverage(off)] | LL | #[coverage(on)] | error[E0658]: the `#[coverage]` attribute is an experimental feature --> $DIR/bad-attr-ice.rs:10:1 | LL | #[coverage] | ^^^^^^^^^^^ | = note: see issue #84605 for more information = help: add `#![feature(coverage_attribute)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0658`.