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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 859349d4170..45983654eec 100644
--- a/src/libstd/json.rs
+++ b/src/libstd/json.rs
@@ -8,6 +8,7 @@ import io;
 import io::{reader_util, writer_util};
 import map;
 import map::hashmap;
+import core::vec::extensions;
 
 export json;
 export error;