error[E0658]: use of unstable library feature 'core_intrinsics': intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library
--> $DIR/expand-to-unstable.rs:8:10
|
LL | #[derive(Unstable)]
| ^^^^^^^^
= help: add #![feature(core_intrinsics)] to the crate attributes to enable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0658`.
