src/test/ui/feature-gates/feature-gate-const_transmute.stderr

   1 error: `std::intrinsics::transmute` is not yet stable as a const fn
   2   --> $DIR/feature-gate-const_transmute.rs:6:38
   3    |
   4 LL | const TRANSMUTED_U32: u32 = unsafe { mem::transmute(Foo(3)) };
   5    |                                      ^^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = help: add `#![feature(const_transmute)]` to the crate attributes to enable
   8
   9 error: aborting due to previous error
  10