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-rw-r--r--src/libcore/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index c7496c209bc..88991dea7d4 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -96,6 +96,7 @@
 #![feature(custom_inner_attributes)]
 #![feature(decl_macro)]
 #![feature(doc_cfg)]
+#![feature(duration_consts_2)]
 #![feature(extern_types)]
 #![feature(fundamental)]
 #![feature(intrinsics)]