From 823337a4ade5e559d485904b685e8f2cef4a3a2c Mon Sep 17 00:00:00 2001
From: Taiki Endo <te316e89@gmail.com>
Date: Mon, 22 Sep 2025 22:15:25 +0900
Subject: [PATCH] Remove unused #![feature(get_mut_unchecked)] in Rc and Arc
 examples

---
 library/alloc/src/rc.rs   | 9 ---------
 library/alloc/src/sync.rs | 9 ---------
 2 files changed, 18 deletions(-)

diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs
index fcb466778a3..aed3357afbf 100644
--- a/library/alloc/src/rc.rs
+++ b/library/alloc/src/rc.rs
@@ -480,8 +480,6 @@ impl<T> Rc<T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::rc::Rc;
     ///
     /// let mut five = Rc::<u32>::new_uninit();
@@ -572,7 +570,6 @@ impl<T> Rc<T> {
     ///
     /// ```
     /// #![feature(allocator_api)]
-    /// #![feature(get_mut_unchecked)]
     ///
     /// use std::rc::Rc;
     ///
@@ -1014,8 +1011,6 @@ impl<T> Rc<[T]> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::rc::Rc;
     ///
     /// let mut values = Rc::<[u32]>::new_uninit_slice(3);
@@ -1181,8 +1176,6 @@ impl<T, A: Allocator> Rc<mem::MaybeUninit<T>, A> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::rc::Rc;
     ///
     /// let mut five = Rc::<u32>::new_uninit();
@@ -1218,8 +1211,6 @@ impl<T, A: Allocator> Rc<[mem::MaybeUninit<T>], A> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::rc::Rc;
     ///
     /// let mut values = Rc::<[u32]>::new_uninit_slice(3);
diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs
index 32396cccb8f..a466b74944c 100644
--- a/library/alloc/src/sync.rs
+++ b/library/alloc/src/sync.rs
@@ -480,8 +480,6 @@ impl<T> Arc<T> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::sync::Arc;
     ///
     /// let mut five = Arc::<u32>::new_uninit();
@@ -586,7 +584,6 @@ impl<T> Arc<T> {
     ///
     /// ```
     /// #![feature(allocator_api)]
-    /// #![feature(get_mut_unchecked)]
     ///
     /// use std::sync::Arc;
     ///
@@ -1156,8 +1153,6 @@ impl<T> Arc<[T]> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::sync::Arc;
     ///
     /// let mut values = Arc::<[u32]>::new_uninit_slice(3);
@@ -1326,8 +1321,6 @@ impl<T, A: Allocator> Arc<mem::MaybeUninit<T>, A> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::sync::Arc;
     ///
     /// let mut five = Arc::<u32>::new_uninit();
@@ -1364,8 +1357,6 @@ impl<T, A: Allocator> Arc<[mem::MaybeUninit<T>], A> {
     /// # Examples
     ///
     /// ```
-    /// #![feature(get_mut_unchecked)]
-    ///
     /// use std::sync::Arc;
     ///
     /// let mut values = Arc::<[u32]>::new_uninit_slice(3);