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-rw-r--r--src/libserialize/json.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libserialize/json.rs b/src/libserialize/json.rs
index 9b93a62304c..c52cfb1e35d 100644
--- a/src/libserialize/json.rs
+++ b/src/libserialize/json.rs
@@ -2600,6 +2600,6 @@ mod tests {
             Ok(o) => o
         };
         let mut decoder = Decoder::new(json_obj);
-        let hm: HashMap<uint, bool> = Decodable::decode(&mut decoder);
+        let _hm: HashMap<uint, bool> = Decodable::decode(&mut decoder);
     }
 }