src/test/ui/feature-gates/feature-gate-compiler-builtins.stderr

   1 error[E0658]: the `#[compiler_builtins]` attribute is used to identify the `compiler_builtins` crate which contains compiler-rt intrinsics and will never be stable
   2   --> $DIR/feature-gate-compiler-builtins.rs:1:1
   3    |
   4 LL | #![compiler_builtins]
   5    | ^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = help: add `#![feature(compiler_builtins)]` to the crate attributes to enable
   8
   9 error: aborting due to previous error
  10
  11 For more information about this error, try `rustc --explain E0658`.