`IntoFuture::into_future` is no longer unstable We don't need to gate the `IntoFuture::into_future` call in `.await` lowering anymore. ``@bors`` rollup
`IntoFuture::into_future` is no longer unstable We don't need to gate the `IntoFuture::into_future` call in `.await` lowering anymore. ``@bors`` rollup