stabilize partition_point

Author: VillSnow

library/core/src/slice/mod.rs

@@ -3425,16 +3425,14 @@ impl<T> [T] {
     /// # Examples
     ///
     /// ```
-    /// #![feature(partition_point)]
-    ///
     /// let v = [1, 2, 3, 3, 5, 6, 7];
     /// let i = v.partition_point(|&x| x < 5);
     ///
     /// assert_eq!(i, 4);
     /// assert!(v[..i].iter().all(|&x| x < 5));
     /// assert!(v[i..].iter().all(|&x| !(x < 5)));
     /// ```
-    #[unstable(feature = "partition_point", reason = "new API", issue = "73831")]
+    #[stable(feature = "partition_point", since = "1.52.0")]
     pub fn partition_point<P>(&self, mut pred: P) -> usize
     where
         P: FnMut(&T) -> bool,

library/core/tests/lib.rs

@@ -67,7 +67,6 @@
 #![feature(option_result_unwrap_unchecked)]
 #![feature(option_unwrap_none)]
 #![feature(peekable_peek_mut)]
-#![feature(partition_point)]
 #![feature(once_cell)]
 #![feature(unsafe_block_in_unsafe_fn)]
 #![feature(int_bits_const)]