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-rw-r--r--src/libcore/lib.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index db73f4759a5..e849369d647 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -59,6 +59,8 @@
 #![deny(missing_debug_implementations)]
 #![cfg_attr(not(stage0), deny(warnings))]
 
+#![cfg_attr(stage0, allow(unused_attributes))]
+
 #![feature(allow_internal_unstable)]
 #![feature(asm)]
 #![feature(associated_type_defaults)]