message: try to really fix tests on macOS
diff: @@ -20,8 +20,10 @@ fn fixed_rng() {
  }
  #[test]
  -#[cfg(not(target_os="macos"))] // FIXME entropy does not work on macOS
  fn entropy_rng() {
  + #[cfg(not(target_os="macos"))] // FIXME entropy does not work on macOS
  + // (Not disabling the entire test as that would change the output.)
  + {
  // Use this opportunity to test querying the RNG (needs an external crate, hence tested here and not in the compiletest suite)
  let mut rng = SmallRng::from_entropy();
  let _val = rng.gen::<i32>();
  @@ -30,6 +32,7 @@ fn entropy_rng() {
  let mut rng = rand::thread_rng();
  let _val = rng.gen::<i32>();
  }
  +}
  // A test that won't work on miri
  #[cfg(not(miri))]
  