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-rw-r--r--src/libstd/time/duration.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/time/duration.rs b/src/libstd/time/duration.rs
index fdd9cbdccf5..483e5995298 100644
--- a/src/libstd/time/duration.rs
+++ b/src/libstd/time/duration.rs
@@ -45,7 +45,7 @@ macro_rules! try_opt {
 
 /// ISO 8601 time duration with nanosecond precision.
 /// This also allows for the negative duration; see individual methods for details.
-#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Show)]
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
 pub struct Duration {
     secs: i64,
     nanos: i32, // Always 0 <= nanos < NANOS_PER_SEC