fixup!

Author: BridgeAR

packages/dd-trace/test/runtime_metrics.spec.js

@@ -15,8 +15,6 @@ require('./setup/core')
 
 const { DogStatsDClient } = require('../src/dogstatsd')
 
-const isWindows = os.platform() === 'win32'
-
 function createGarbage (count = 50) {
   let last = {}
   const obj = last
@@ -183,6 +181,13 @@ function createGarbage (count = 50) {
               throw new Error('Native metrics are not supported in this environment')
             },
           }
+        } else {
+          // The log is called in case native metrics fail to load.
+          proxiedObject['../log'] = {
+            error () {
+              throw new Error('Native metrics should load properly')
+            },
+          }
         }
 
         runtimeMetrics = proxyquire('../src/runtime_metrics/runtime_metrics', proxiedObject)