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-rw-r--r--library/core/src/mem/mod.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/library/core/src/mem/mod.rs b/library/core/src/mem/mod.rs
index ada80463306..74b198c4fdd 100644
--- a/library/core/src/mem/mod.rs
+++ b/library/core/src/mem/mod.rs
@@ -857,7 +857,6 @@ pub fn take<T: Default>(dest: &mut T) -> T {
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[must_use = "if you don't need the old value, you can just assign the new value directly"]
-#[cfg_attr(bootstrap, rustc_allow_const_fn_unstable(const_mut_refs))]
 #[rustc_const_stable(feature = "const_replace", since = "1.83.0")]
 #[cfg_attr(not(test), rustc_diagnostic_item = "mem_replace")]
 pub const fn replace<T>(dest: &mut T, src: T) -> T {