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-rw-r--r--src/libtest/lib.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libtest/lib.rs b/src/libtest/lib.rs
index 46e2ca03ef6..ef6ad80512c 100644
--- a/src/libtest/lib.rs
+++ b/src/libtest/lib.rs
@@ -1103,8 +1103,8 @@ fn calc_result(desc: &TestDesc, task_succeeded: bool) -> TestResult {
 impl ToJson for Metric {
     fn to_json(&self) -> json::Json {
         let mut map = TreeMap::new();
-        map.insert("value".to_string(), json::Number(self.value));
-        map.insert("noise".to_string(), json::Number(self.noise));
+        map.insert("value".to_string(), json::Floating(self.value));
+        map.insert("noise".to_string(), json::Floating(self.noise));
         json::Object(map)
     }
 }