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-rw-r--r--src/libstd/failure.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstd/failure.rs b/src/libstd/failure.rs
index d1552f0bd10..47ff85e2806 100644
--- a/src/libstd/failure.rs
+++ b/src/libstd/failure.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![experimental]
+
 use alloc::owned::Box;
 use any::{Any, AnyRefExt};
 use fmt;