/// assert_eq!(slice, &[3, 2, 1] as &[_]);
/// }
/// ```
- #[unstable(feature = "deque_make_contiguous", issue = "none")]
+ #[unstable(feature = "deque_make_contiguous", issue = "70929")]
pub fn make_contiguous(&mut self) -> &mut [T] {
if self.is_contiguous() {
let tail = self.tail;