message: comment out wrapping_is_signed test to make Rust 1.8 happy
diff: @@ -192,8 +192,13 @@ fn unsigned_wrapping_is_unsigned() {
  fn require_unsigned<T: Unsigned>(_: &T) {}
  require_unsigned(&Wrapping(42_u32));
  }
  +/*
  +// Commenting this out since it doesn't compile on Rust 1.8,
  +// because on this version Wrapping doesn't implement Neg and therefore can't
  +// implement Signed.
  #[test]
  fn signed_wrapping_is_signed() {
  fn require_signed<T: Signed>(_: &T) {}
  require_signed(&Wrapping(-42));
  }
  +*/
  