message: impl One for Wrapping doesn't require Add
diff: @@ -105,7 +105,7 @@ one_impl!(i64, 1i64);
  one_impl!(f32, 1.0f32);
  one_impl!(f64, 1.0f64);
  -impl<T: One> One for Wrapping<T> where Wrapping<T>: Add<Output=Wrapping<T>> + Mul<Output=Wrapping<T>> {
  +impl<T: One> One for Wrapping<T> where Wrapping<T>: Mul<Output=Wrapping<T>> {
  fn one() -> Self {
  Wrapping(T::one())
  }
  