Vec::new is const tstable in 1.39 not 1.32

Author: CAD97

src/liballoc/vec.rs

@@ -317,7 +317,7 @@ impl<T> Vec<T> {
     /// let mut vec: Vec<i32> = Vec::new();
     /// ```
     #[inline]
-    #[rustc_const_stable(feature = "const_vec_new", since = "1.32.0")]
+    #[rustc_const_stable(feature = "const_vec_new", since = "1.39.0")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const fn new() -> Vec<T> {
         Vec { buf: RawVec::NEW, len: 0 }