3 files changed, 3 insertions, 3 deletions
diff --git a/library/std/src/sys/sync/once/queue.rs b/library/std/src/sys/sync/once/queue.rs
index 3e83a4a088f..177d0d7744a 100644
--- a/library/std/src/sys/sync/once/queue.rs
+++ b/library/std/src/sys/sync/once/queue.rs
@@ -116,7 +116,7 @@ fn to_state(current: StateAndQueue) -> usize {
 
 impl Once {
     #[inline]
-    #[rustc_const_stable(feature = "const_once_new", since = "1.32.0")]
+    #[cfg_attr(bootstrap, rustc_const_stable(feature = "const_once_new", since = "1.32.0"))]
     pub const fn new() -> Once {
         Once { state_and_queue: AtomicPtr::new(ptr::without_provenance_mut(INCOMPLETE)) }
     }
diff --git a/library/std/src/sys/thread_local/key/racy.rs b/library/std/src/sys/thread_local/key/racy.rs
index 69f11458c32..97df8997b80 100644
--- a/library/std/src/sys/thread_local/key/racy.rs
+++ b/library/std/src/sys/thread_local/key/racy.rs
@@ -30,7 +30,7 @@ const KEY_SENTVAL: usize = 0;
 const KEY_SENTVAL: usize = libc::PTHREAD_KEYS_MAX + 1;
 
 impl LazyKey {
-    #[rustc_const_unstable(feature = "thread_local_internals", issue = "none")]
+    #[cfg_attr(bootstrap, rustc_const_unstable(feature = "thread_local_internals", issue = "none"))]
     pub const fn new(dtor: Option<unsafe extern "C" fn(*mut u8)>) -> LazyKey {
         LazyKey { key: atomic::AtomicUsize::new(KEY_SENTVAL), dtor }
     }
diff --git a/library/std/src/sys/thread_local/os.rs b/library/std/src/sys/thread_local/os.rs
index f5a2aaa6c6a..58f291ffdb9 100644
--- a/library/std/src/sys/thread_local/os.rs
+++ b/library/std/src/sys/thread_local/os.rs
@@ -60,7 +60,7 @@ struct Value<T: 'static> {
 }
 
 impl<T: 'static> Storage<T> {
-    #[rustc_const_unstable(feature = "thread_local_internals", issue = "none")]
+    #[cfg_attr(bootstrap, rustc_const_unstable(feature = "thread_local_internals", issue = "none"))]
     pub const fn new() -> Storage<T> {
         Storage { key: LazyKey::new(Some(destroy_value::<T>)), marker: PhantomData }
     }