From 9854d30543b34443a17537acfd1caff64b8a2697 Mon Sep 17 00:00:00 2001
From: Mara Bos <m-ou.se@m-ou.se>
Date: Sun, 1 Aug 2021 17:25:19 +0200
Subject: [PATCH] Update const_slice_first_last_not_mut stable version.

---
 library/core/src/slice/mod.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 06ef9fcbdea..e7cc34c30b1 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -140,7 +140,7 @@ impl<T> [T] {
     /// assert_eq!(None, w.first());
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.55.0")]
+    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")]
     #[inline]
     pub const fn first(&self) -> Option<&T> {
         if let [first, ..] = self { Some(first) } else { None }
@@ -178,7 +178,7 @@ impl<T> [T] {
     /// }
     /// ```
     #[stable(feature = "slice_splits", since = "1.5.0")]
-    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.55.0")]
+    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")]
     #[inline]
     pub const fn split_first(&self) -> Option<(&T, &[T])> {
         if let [first, tail @ ..] = self { Some((first, tail)) } else { None }
@@ -218,7 +218,7 @@ impl<T> [T] {
     /// }
     /// ```
     #[stable(feature = "slice_splits", since = "1.5.0")]
-    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.55.0")]
+    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")]
     #[inline]
     pub const fn split_last(&self) -> Option<(&T, &[T])> {
         if let [init @ .., last] = self { Some((last, init)) } else { None }
@@ -257,7 +257,7 @@ impl<T> [T] {
     /// assert_eq!(None, w.last());
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.55.0")]
+    #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")]
     #[inline]
     pub const fn last(&self) -> Option<&T> {
         if let [.., last] = self { Some(last) } else { None }