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-rw-r--r--src/librustc_back/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc_back/lib.rs b/src/librustc_back/lib.rs
index ccf1db778d2..8bf60b091a7 100644
--- a/src/librustc_back/lib.rs
+++ b/src/librustc_back/lib.rs
@@ -28,6 +28,7 @@
 
 #![feature(box_syntax)]
 #![feature(const_fn)]
+#![feature(fs_read_write)]
 
 extern crate syntax;
 extern crate rand;