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-rw-r--r--src/libstd/time/duration.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/time/duration.rs b/src/libstd/time/duration.rs
index 8001df29d1f..28eaed40da8 100644
--- a/src/libstd/time/duration.rs
+++ b/src/libstd/time/duration.rs
@@ -12,6 +12,7 @@
 
 #![unstable(feature = "duration", reason = "recently added API per RFC 1040")]
 
+#[cfg(stage0)]
 use prelude::v1::*;
 
 use fmt;