diff --git a/library/core/src/slice/ascii.rs b/library/core/src/slice/ascii.rs
index 63715a6b86b97..bb91cb3b6b833 100644
--- a/library/core/src/slice/ascii.rs
+++ b/library/core/src/slice/ascii.rs
@@ -67,7 +67,6 @@ impl [u8] {
     /// # Examples
     ///
     /// ```
-    ///
     /// let s = b"0\t\r\n'\"\\\x9d";
     /// let escaped = s.escape_ascii().to_string();
     /// assert_eq!(escaped, "0\\t\\r\\n\\'\\\"\\\\\\x9d");
@@ -184,10 +183,6 @@ impl<'a> iter::Iterator for EscapeAscii<'a> {
         self.inner.next()
     }
     #[inline]
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        self.inner.size_hint()
-    }
-    #[inline]
     fn try_fold<Acc, Fold, R>(&mut self, init: Acc, fold: Fold) -> R
     where
         Fold: FnMut(Acc, Self::Item) -> R,
@@ -215,8 +210,6 @@ impl<'a> iter::DoubleEndedIterator for EscapeAscii<'a> {
     }
 }
 #[stable(feature = "inherent_ascii_escape", since = "1.60.0")]
-impl<'a> iter::ExactSizeIterator for EscapeAscii<'a> {}
-#[stable(feature = "inherent_ascii_escape", since = "1.60.0")]
 impl<'a> iter::FusedIterator for EscapeAscii<'a> {}
 #[stable(feature = "inherent_ascii_escape", since = "1.60.0")]
 impl<'a> fmt::Display for EscapeAscii<'a> {
diff --git a/library/core/tests/slice.rs b/library/core/tests/slice.rs
index 0656109e9db88..ab01d46959235 100644
--- a/library/core/tests/slice.rs
+++ b/library/core/tests/slice.rs
@@ -2266,6 +2266,7 @@ fn test_copy_within_panics_src_inverted() {
     // 2 is greater than 1, so this range is invalid.
     bytes.copy_within(2..1, 0);
 }
+
 #[test]
 #[should_panic(expected = "attempted to index slice up to maximum usize")]
 fn test_copy_within_panics_src_out_of_bounds() {