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-rw-r--r--library/core/src/panic.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/library/core/src/panic.rs b/library/core/src/panic.rs
index 00b63dfbd..461b70c32 100644
--- a/library/core/src/panic.rs
+++ b/library/core/src/panic.rs
@@ -80,7 +80,6 @@ pub macro unreachable_2015 {
#[doc(hidden)]
#[unstable(feature = "edition_panic", issue = "none", reason = "use unreachable!() instead")]
#[allow_internal_unstable(core_panic)]
-#[rustc_diagnostic_item = "unreachable_2021_macro"]
#[rustc_macro_transparency = "semitransparent"]
pub macro unreachable_2021 {
() => (