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-rw-r--r--src/libserialize/lib.rs5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 31790ce6290..8170dd95730 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -29,12 +29,13 @@ Core encoding and decoding interfaces.
 
 #![feature(box_syntax)]
 #![feature(collections)]
-#![feature(core)]
+#![feature(num_bits_bytes)]
+#![feature(num_wrapping)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(std_misc)]
-#![feature(unicode)]
 #![feature(str_char)]
+#![feature(unicode)]
 #![cfg_attr(test, feature(test))]
 
 // test harness access