Remove repr(trasparent) attribute
@@ -21,7 +21,8 @@ use Backoff;
/// [`AtomicCell::<T>::is_lock_free()`]: struct.AtomicCell.html#method.is_lock_free
/// [`Acquire`]: https://doc.rust-lang.org/std/sync/atomic/enum.Ordering.html#variant.Acquire
/// [`Release`]: https://doc.rust-lang.org/std/sync/atomic/enum.Ordering.html#variant.Release
-#[repr(transparent)]
+// TODO(@jeehoonkang): when the minimum supported Rust version is bumped to 1.28+, apply the
+// attribute `#[repr(transparent)]`.
pub struct AtomicCell<T: ?Sized> {
/// The inner value.
///
