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-rw-r--r--src/libstd/json.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libstd/json.rs b/src/libstd/json.rs
index c6e76aa1a68..d1a65517aad 100644
--- a/src/libstd/json.rs
+++ b/src/libstd/json.rs
@@ -1208,6 +1208,7 @@ mod tests {
     use core::prelude::*;
 
     use json::*;
+    use serialize;
 
     use core::result;
     use core::hashmap::linear::LinearMap;