error[E0658]: the `#[panic_runtime]` attribute is an experimental feature --> $DIR/needs-gate.rs:4:1 | LL | #![panic_runtime] | ^^^^^^^^^^^^^^^^^ | = note: see issue #32837 for more information = help: add `#![feature(panic_runtime)]` to the crate attributes to enable error[E0658]: the `#[needs_panic_runtime]` attribute is an experimental feature --> $DIR/needs-gate.rs:5:1 | LL | #![needs_panic_runtime] | ^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #32837 for more information = help: add `#![feature(needs_panic_runtime)]` to the crate attributes to enable error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0658`.