1 error[E0658]: the `#[no_debug]` attribute was an experimental feature that has been deprecated due to lack of demand (see issue #29721)
2 --> $DIR/feature-gate-no-debug.rs:3:1
4 LL | #[no_debug] //~ ERROR the `#[no_debug]` attribute was
7 = help: add #![feature(no_debug)] to the crate attributes to enable
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0658`.