diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 30b7b45468412..9deae12482976 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -1921,12 +1921,10 @@ big-endian (network) byte order.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_be_bytes();
 assert_eq!(bytes, ", $be_bytes, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_be_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -1941,12 +1939,10 @@ little-endian byte order.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_le_bytes();
 assert_eq!(bytes, ", $le_bytes, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_le_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -1969,8 +1965,6 @@ instead.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_ne_bytes();
 assert_eq!(bytes, if cfg!(target_endian = \"big\") {
         ", $be_bytes, "
@@ -1978,7 +1972,7 @@ assert_eq!(bytes, if cfg!(target_endian = \"big\") {
         ", $le_bytes, "
     });
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_ne_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -1993,12 +1987,10 @@ big endian.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_be_bytes(", $be_bytes, ");
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_be_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
@@ -2014,12 +2006,10 @@ little endian.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_le_bytes(", $le_bytes, ");
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_le_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
@@ -2041,8 +2031,6 @@ appropriate instead.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_ne_bytes(if cfg!(target_endian = \"big\") {
         ", $be_bytes, "
     } else {
@@ -2050,7 +2038,7 @@ let value = ", stringify!($SelfT), "::from_ne_bytes(if cfg!(target_endian = \"bi
     });
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_ne_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
@@ -3663,12 +3651,10 @@ big-endian (network) byte order.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_be_bytes();
 assert_eq!(bytes, ", $be_bytes, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_be_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -3683,12 +3669,10 @@ little-endian byte order.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_le_bytes();
 assert_eq!(bytes, ", $le_bytes, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_le_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -3711,8 +3695,6 @@ instead.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let bytes = ", $swap_op, stringify!($SelfT), ".to_ne_bytes();
 assert_eq!(bytes, if cfg!(target_endian = \"big\") {
         ", $be_bytes, "
@@ -3720,7 +3702,7 @@ assert_eq!(bytes, if cfg!(target_endian = \"big\") {
         ", $le_bytes, "
     });
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn to_ne_bytes(self) -> [u8; mem::size_of::<Self>()] {
@@ -3735,12 +3717,10 @@ big endian.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_be_bytes(", $be_bytes, ");
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_be_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
@@ -3756,12 +3736,10 @@ little endian.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_le_bytes(", $le_bytes, ");
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_le_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
@@ -3783,8 +3761,6 @@ appropriate instead.
 # Examples
 
 ```
-#![feature(int_to_from_bytes)]
-
 let value = ", stringify!($SelfT), "::from_ne_bytes(if cfg!(target_endian = \"big\") {
         ", $be_bytes, "
     } else {
@@ -3792,7 +3768,7 @@ let value = ", stringify!($SelfT), "::from_ne_bytes(if cfg!(target_endian = \"bi
     });
 assert_eq!(value, ", $swap_op, ");
 ```"),
-            #[unstable(feature = "int_to_from_bytes", issue = "52963")]
+            #[stable(feature = "int_to_from_bytes", since = "1.32.0")]
             #[rustc_const_unstable(feature = "const_int_conversion")]
             #[inline]
             pub const fn from_ne_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
diff --git a/src/test/run-pass/const-int-conversion.rs b/src/test/run-pass/const-int-conversion.rs
index 790c62288d38b..e199c43858521 100644
--- a/src/test/run-pass/const-int-conversion.rs
+++ b/src/test/run-pass/const-int-conversion.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(const_int_conversion, const_int_ops, reverse_bits, int_to_from_bytes)]
+#![feature(const_int_conversion, const_int_ops, reverse_bits)]
 
 const REVERSE: u32 = 0x12345678_u32.reverse_bits();
 const FROM_BE_BYTES: i32 = i32::from_be_bytes([0x12, 0x34, 0x56, 0x78]);
diff --git a/src/test/ui/consts/const-int-conversion.rs b/src/test/ui/consts/const-int-conversion.rs
index 0abe6b4a1e49f..2a20f0df15ca2 100644
--- a/src/test/ui/consts/const-int-conversion.rs
+++ b/src/test/ui/consts/const-int-conversion.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(reverse_bits, int_to_from_bytes)]
+#![feature(reverse_bits)]
 
 fn main() {
     let x: &'static i32 = &(5_i32.reverse_bits());