rust/tests/ui/feature-gates/feature-gate-unsafe-attribu...

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error[E0658]: `#[unsafe()]` markers for attributes are experimental
--> $DIR/feature-gate-unsafe-attributes.rs:1:3
|
LL | #[unsafe(no_mangle)]
| ^^^^^^
|
= note: see issue #123757 <https://github.com/rust-lang/rust/issues/123757> for more information
= help: add `#![feature(unsafe_attributes)]` 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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date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`.