2 files changed, 1 insertions, 1 deletions
diff --git a/library/core/src/macros/mod.rs b/library/core/src/macros/mod.rs
index 3ca8f27c79a..07ee589e29f 100644
--- a/library/core/src/macros/mod.rs
+++ b/library/core/src/macros/mod.rs
@@ -845,6 +845,7 @@ pub(crate) mod builtin {
                   language use and is subject to change"
     )]
     #[allow_internal_unstable(fmt_internals)]
+    #[doc(hidden)]
     #[rustc_builtin_macro]
     #[macro_export]
     macro_rules! format_args_nl {
diff --git a/library/core/src/mem/maybe_uninit.rs b/library/core/src/mem/maybe_uninit.rs
index 5122421ea8c..d3ebc1cebb6 100644
--- a/library/core/src/mem/maybe_uninit.rs
+++ b/library/core/src/mem/maybe_uninit.rs
@@ -461,7 +461,6 @@ impl<T> MaybeUninit<T> {
     /// With `write`, we can avoid the need to write through a raw pointer:
     ///
     /// ```rust
-    /// #![feature(maybe_uninit_extra)]
     /// use core::pin::Pin;
     /// use core::mem::MaybeUninit;
     ///