Rollup merge of #86797 - inquisitivecrystal:bound-cloned, r=jyn514

Stabilize `Bound::cloned()`

This PR stabilizes the function `Bound::cloned()`.

Closes #61356.

Author: GuillaumeGomez

Diff for: library/core/src/ops/range.rs

@@ -737,14 +737,13 @@ impl<T: Clone> Bound<&T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(bound_cloned)]
     /// use std::ops::Bound::*;
     /// use std::ops::RangeBounds;
     ///
     /// assert_eq!((1..12).start_bound(), Included(&1));
     /// assert_eq!((1..12).start_bound().cloned(), Included(1));
     /// ```
-    #[unstable(feature = "bound_cloned", issue = "61356")]
+    #[stable(feature = "bound_cloned", since = "1.55.0")]
     pub fn cloned(self) -> Bound<T> {
         match self {
             Bound::Unbounded => Bound::Unbounded,

Diff for: library/core/tests/lib.rs

@@ -4,7 +4,6 @@
 #![feature(array_map)]
 #![feature(array_windows)]
 #![feature(bool_to_option)]
-#![feature(bound_cloned)]
 #![feature(box_syntax)]
 #![feature(cell_update)]
 #![feature(cfg_panic)]

Diff for: library/proc_macro/src/lib.rs

@@ -31,7 +31,6 @@
 #![feature(restricted_std)]
 #![feature(rustc_attrs)]
 #![feature(min_specialization)]
-#![feature(bound_cloned)]
 #![recursion_limit = "256"]
 
 #[unstable(feature = "proc_macro_internals", issue = "27812")]