Rollup merge of #59231 - matklad:copied, r=Centril

Stabilize Option::copied

closes #57126

Author: kennytm

src/libcore/option.rs

@@ -881,15 +881,13 @@ impl<T: Copy> Option<&T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(copied)]
-    ///
     /// let x = 12;
     /// let opt_x = Some(&x);
     /// assert_eq!(opt_x, Some(&12));
     /// let copied = opt_x.copied();
     /// assert_eq!(copied, Some(12));
     /// ```
-    #[unstable(feature = "copied", issue = "57126")]
+    #[stable(feature = "copied", since = "1.35.0")]
     pub fn copied(self) -> Option<T> {
         self.map(|&t| t)
     }
@@ -902,15 +900,13 @@ impl<T: Copy> Option<&mut T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(copied)]
-    ///
     /// let mut x = 12;
     /// let opt_x = Some(&mut x);
     /// assert_eq!(opt_x, Some(&mut 12));
     /// let copied = opt_x.copied();
     /// assert_eq!(copied, Some(12));
     /// ```
-    #[unstable(feature = "copied", issue = "57126")]
+    #[stable(feature = "copied", since = "1.35.0")]
     pub fn copied(self) -> Option<T> {
         self.map(|&mut t| t)
     }

src/libcore/tests/lib.rs

@@ -1,6 +1,5 @@
 #![feature(box_syntax)]
 #![feature(cell_update)]
-#![feature(copied)]
 #![feature(core_private_bignum)]
 #![feature(core_private_diy_float)]
 #![feature(dec2flt)]