and cause Futures to not implement `Send`"]
#[stable(feature = "rust1", since = "1.0.0")]
#[clippy::has_significant_drop]
+#[cfg_attr(not(test), rustc_diagnostic_item = "RwLockReadGuard")]
pub struct RwLockReadGuard<'a, T: ?Sized + 'a> {
// NB: we use a pointer instead of `&'a T` to avoid `noalias` violations, because a
// `Ref` argument doesn't hold immutability for its whole scope, only until it drops.
and cause Future's to not implement `Send`"]
#[stable(feature = "rust1", since = "1.0.0")]
#[clippy::has_significant_drop]
+#[cfg_attr(not(test), rustc_diagnostic_item = "RwLockWriteGuard")]
pub struct RwLockWriteGuard<'a, T: ?Sized + 'a> {
lock: &'a RwLock<T>,
poison: poison::Guard,