error: SIMD types are experimental and possibly buggy (see issue #27731)
  --> $DIR/feature-gate-simd.rs:14:1
   |
14 | #[repr(simd)] //~ ERROR SIMD types are experimental
   | ^^^^^^^^^^^^^
   |
   = help: add #![feature(repr_simd)] to the crate attributes to enable

error: aborting due to previous error