diff --git a/library/alloc/src/collections/vec_deque/pair_slices.rs b/library/alloc/src/collections/vec_deque/pair_slices.rs
index 812765d0b0d..7b87090fb07 100644
--- a/library/alloc/src/collections/vec_deque/pair_slices.rs
+++ b/library/alloc/src/collections/vec_deque/pair_slices.rs
@@ -1,4 +1,3 @@
-use core::array;
 use core::cmp::{self};
 use core::mem::replace;
 
@@ -37,7 +36,7 @@ impl<'a, 'b, T> PairSlices<'a, 'b, T> {
     }
 
     pub fn remainder(self) -> impl Iterator<Item = &'b [T]> {
-        array::IntoIter::new([self.b0, self.b1])
+        IntoIterator::into_iter([self.b0, self.b1])
     }
 }
 
diff --git a/library/core/src/array/mod.rs b/library/core/src/array/mod.rs
index e25d006d213..37af3557fdd 100644
--- a/library/core/src/array/mod.rs
+++ b/library/core/src/array/mod.rs
@@ -416,7 +416,7 @@ impl<T, const N: usize> [T; N] {
     {
         // SAFETY: we know for certain that this iterator will yield exactly `N`
         // items.
-        unsafe { collect_into_array_unchecked(&mut IntoIter::new(self).map(f)) }
+        unsafe { collect_into_array_unchecked(&mut IntoIterator::into_iter(self).map(f)) }
     }
 
     /// 'Zips up' two arrays into a single array of pairs.
@@ -437,7 +437,7 @@ impl<T, const N: usize> [T; N] {
     /// ```
     #[unstable(feature = "array_zip", issue = "80094")]
     pub fn zip<U>(self, rhs: [U; N]) -> [(T, U); N] {
-        let mut iter = IntoIter::new(self).zip(IntoIter::new(rhs));
+        let mut iter = IntoIterator::into_iter(self).zip(rhs);
 
         // SAFETY: we know for certain that this iterator will yield exactly `N`
         // items.
diff --git a/library/core/tests/array.rs b/library/core/tests/array.rs
index ce7480ce2ee..42f44c23fe7 100644
--- a/library/core/tests/array.rs
+++ b/library/core/tests/array.rs
@@ -41,14 +41,14 @@ fn array_try_from() {
 #[test]
 fn iterator_collect() {
     let arr = [0, 1, 2, 5, 9];
-    let v: Vec<_> = IntoIter::new(arr.clone()).collect();
+    let v: Vec<_> = IntoIterator::into_iter(arr.clone()).collect();
     assert_eq!(&arr[..], &v[..]);
 }
 
 #[test]
 fn iterator_rev_collect() {
     let arr = [0, 1, 2, 5, 9];
-    let v: Vec<_> = IntoIter::new(arr.clone()).rev().collect();
+    let v: Vec<_> = IntoIterator::into_iter(arr.clone()).rev().collect();
     assert_eq!(&v[..], &[9, 5, 2, 1, 0]);
 }
 
@@ -56,11 +56,11 @@ fn iterator_rev_collect() {
 fn iterator_nth() {
     let v = [0, 1, 2, 3, 4];
     for i in 0..v.len() {
-        assert_eq!(IntoIter::new(v.clone()).nth(i).unwrap(), v[i]);
+        assert_eq!(IntoIterator::into_iter(v.clone()).nth(i).unwrap(), v[i]);
     }
-    assert_eq!(IntoIter::new(v.clone()).nth(v.len()), None);
+    assert_eq!(IntoIterator::into_iter(v.clone()).nth(v.len()), None);
 
-    let mut iter = IntoIter::new(v);
+    let mut iter = IntoIterator::into_iter(v);
     assert_eq!(iter.nth(2).unwrap(), v[2]);
     assert_eq!(iter.nth(1).unwrap(), v[4]);
 }
@@ -68,17 +68,17 @@ fn iterator_nth() {
 #[test]
 fn iterator_last() {
     let v = [0, 1, 2, 3, 4];
-    assert_eq!(IntoIter::new(v).last().unwrap(), 4);
-    assert_eq!(IntoIter::new([0]).last().unwrap(), 0);
+    assert_eq!(IntoIterator::into_iter(v).last().unwrap(), 4);
+    assert_eq!(IntoIterator::into_iter([0]).last().unwrap(), 0);
 
-    let mut it = IntoIter::new([0, 9, 2, 4]);
+    let mut it = IntoIterator::into_iter([0, 9, 2, 4]);
     assert_eq!(it.next_back(), Some(4));
     assert_eq!(it.last(), Some(2));
 }
 
 #[test]
 fn iterator_clone() {
-    let mut it = IntoIter::new([0, 2, 4, 6, 8]);
+    let mut it = IntoIterator::into_iter([0, 2, 4, 6, 8]);
     assert_eq!(it.next(), Some(0));
     assert_eq!(it.next_back(), Some(8));
     let mut clone = it.clone();
@@ -92,7 +92,7 @@ fn iterator_clone() {
 
 #[test]
 fn iterator_fused() {
-    let mut it = IntoIter::new([0, 9, 2]);
+    let mut it = IntoIterator::into_iter([0, 9, 2]);
     assert_eq!(it.next(), Some(0));
     assert_eq!(it.next(), Some(9));
     assert_eq!(it.next(), Some(2));
@@ -105,7 +105,7 @@ fn iterator_fused() {
 
 #[test]
 fn iterator_len() {
-    let mut it = IntoIter::new([0, 1, 2, 5, 9]);
+    let mut it = IntoIterator::into_iter([0, 1, 2, 5, 9]);
     assert_eq!(it.size_hint(), (5, Some(5)));
     assert_eq!(it.len(), 5);
     assert_eq!(it.is_empty(), false);
@@ -121,7 +121,7 @@ fn iterator_len() {
     assert_eq!(it.is_empty(), false);
 
     // Empty
-    let it = IntoIter::new([] as [String; 0]);
+    let it = IntoIterator::into_iter([] as [String; 0]);
     assert_eq!(it.size_hint(), (0, Some(0)));
     assert_eq!(it.len(), 0);
     assert_eq!(it.is_empty(), true);
@@ -130,9 +130,9 @@ fn iterator_len() {
 #[test]
 fn iterator_count() {
     let v = [0, 1, 2, 3, 4];
-    assert_eq!(IntoIter::new(v.clone()).count(), 5);
+    assert_eq!(IntoIterator::into_iter(v.clone()).count(), 5);
 
-    let mut iter2 = IntoIter::new(v);
+    let mut iter2 = IntoIterator::into_iter(v);
     iter2.next();
     iter2.next();
     assert_eq!(iter2.count(), 3);
@@ -140,13 +140,13 @@ fn iterator_count() {
 
 #[test]
 fn iterator_flat_map() {
-    assert!((0..5).flat_map(|i| IntoIter::new([2 * i, 2 * i + 1])).eq(0..10));
+    assert!((0..5).flat_map(|i| IntoIterator::into_iter([2 * i, 2 * i + 1])).eq(0..10));
 }
 
 #[test]
 fn iterator_debug() {
     let arr = [0, 1, 2, 5, 9];
-    assert_eq!(format!("{:?}", IntoIter::new(arr)), "IntoIter([0, 1, 2, 5, 9])",);
+    assert_eq!(format!("{:?}", IntoIterator::into_iter(arr)), "IntoIter([0, 1, 2, 5, 9])",);
 }
 
 #[test]
@@ -176,14 +176,14 @@ fn iterator_drops() {
     // Simple: drop new iterator.
     let i = Cell::new(0);
     {
-        IntoIter::new(five(&i));
+        IntoIterator::into_iter(five(&i));
     }
     assert_eq!(i.get(), 5);
 
     // Call `next()` once.
     let i = Cell::new(0);
     {
-        let mut iter = IntoIter::new(five(&i));
+        let mut iter = IntoIterator::into_iter(five(&i));
         let _x = iter.next();
         assert_eq!(i.get(), 0);
         assert_eq!(iter.count(), 4);
@@ -194,7 +194,7 @@ fn iterator_drops() {
     // Check `clone` and calling `next`/`next_back`.
     let i = Cell::new(0);
     {
-        let mut iter = IntoIter::new(five(&i));
+        let mut iter = IntoIterator::into_iter(five(&i));
         iter.next();
         assert_eq!(i.get(), 1);
         iter.next_back();
@@ -217,7 +217,7 @@ fn iterator_drops() {
     // Check via `nth`.
     let i = Cell::new(0);
     {
-        let mut iter = IntoIter::new(five(&i));
+        let mut iter = IntoIterator::into_iter(five(&i));
         let _x = iter.nth(2);
         assert_eq!(i.get(), 2);
         let _y = iter.last();
@@ -227,13 +227,13 @@ fn iterator_drops() {
 
     // Check every element.
     let i = Cell::new(0);
-    for (index, _x) in IntoIter::new(five(&i)).enumerate() {
+    for (index, _x) in IntoIterator::into_iter(five(&i)).enumerate() {
         assert_eq!(i.get(), index);
     }
     assert_eq!(i.get(), 5);
 
     let i = Cell::new(0);
-    for (index, _x) in IntoIter::new(five(&i)).rev().enumerate() {
+    for (index, _x) in IntoIterator::into_iter(five(&i)).rev().enumerate() {
         assert_eq!(i.get(), index);
     }
     assert_eq!(i.get(), 5);
diff --git a/src/test/ui/const-generics/array-impls/into-iter-impls-length-32.rs b/src/test/ui/const-generics/array-impls/into-iter-impls-length-32.rs
index 6ba1b2813a1..457e5ae6049 100644
--- a/src/test/ui/const-generics/array-impls/into-iter-impls-length-32.rs
+++ b/src/test/ui/const-generics/array-impls/into-iter-impls-length-32.rs
@@ -9,31 +9,31 @@ use std::{
 };
 
 pub fn yes_iterator() -> impl Iterator<Item = i32> {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_double_ended_iterator() -> impl DoubleEndedIterator {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_exact_size_iterator() -> impl ExactSizeIterator {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_fused_iterator() -> impl FusedIterator {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_trusted_len() -> impl TrustedLen {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_clone() -> impl Clone {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 pub fn yes_debug() -> impl Debug {
-    IntoIter::new([0i32; 32])
+    IntoIterator::into_iter([0i32; 32])
 }
 
 
diff --git a/src/test/ui/const-generics/array-impls/into-iter-impls-length-33.rs b/src/test/ui/const-generics/array-impls/into-iter-impls-length-33.rs
index deafde2912b..4f343f3f97e 100644
--- a/src/test/ui/const-generics/array-impls/into-iter-impls-length-33.rs
+++ b/src/test/ui/const-generics/array-impls/into-iter-impls-length-33.rs
@@ -9,31 +9,31 @@ use std::{
 };
 
 pub fn yes_iterator() -> impl Iterator<Item = i32> {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_double_ended_iterator() -> impl DoubleEndedIterator {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_exact_size_iterator() -> impl ExactSizeIterator {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_fused_iterator() -> impl FusedIterator {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_trusted_len() -> impl TrustedLen {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_clone() -> impl Clone {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }
 
 pub fn yes_debug() -> impl Debug {
-    IntoIter::new([0i32; 33])
+    IntoIterator::into_iter([0i32; 33])
 }