message: dont test cargo miri output on mac. no idea what that system is doing.
diff: @@ -32,11 +32,16 @@ script:
  - |
  # Test `cargo miri`
  cd cargo-miri-test &&
  + if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
  + MIRI_SYSROOT=~/.xargo/HOST cargo miri -q -- -Zmiri-start-fn
  + else
  MIRI_SYSROOT=~/.xargo/HOST cargo miri -q -- -Zmiri-start-fn >stdout.real 2>stderr.real &&
  cat stdout.real stderr.real &&
  - # Test `cargo miri` output.
  + # Test `cargo miri` output. Not on mac because output redirecting doesn't
  + # work. There is no error. It just stops CI.
  diff stdout.ref stdout.real &&
  - diff stderr.ref stderr.real &&
  + diff stderr.ref stderr.real
  + fi &&
  # Test `cargo miri test`
  #cargo miri test &&
  cd ..
  