message: change one of the ref-to-uninhbaited tests to Box
diff: #![feature(never_type)]
  -use std::mem::transmute;
  +use std::mem::{transmute, forget};
  fn main() { unsafe {
  - let _x: &! = transmute(&42); //~ERROR encountered a reference pointing to uninhabited type !
  + let x: Box<!> = transmute(&mut 42); //~ERROR encountered a box pointing to uninhabited type !
  + forget(x);
  } }
  