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-rw-r--r--src/librustc_traits/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_traits/lib.rs b/src/librustc_traits/lib.rs
index 0a21cc597e6..90f368edeec 100644
--- a/src/librustc_traits/lib.rs
+++ b/src/librustc_traits/lib.rs
@@ -15,7 +15,7 @@
 
 #![feature(crate_visibility_modifier)]
 #![cfg_attr(stage0, feature(match_default_bindings))]
-#![feature(underscore_lifetimes)]
+#![cfg_attr(stage0, feature(underscore_lifetimes))]
 
 #[macro_use]
 extern crate log;