anchor.diff:        "created_at": "2015-05-09T21:05:59.874Z",
         "scheduled_at": "2015-05-09T21:05:59.874Z",
         "started_at": "2015-05-09T21:05:59.874Z",
  -      "finished_at": "2015-05-09T21:05:59.874Z"
  +      "finished_at": "2015-05-09T21:05:59.874Z",
  +      "runnable_at": "2015-05-09T21:07:21.244Z"
       }
     ],
     "created_at": "2015-05-09T21:05:59.874Z",
  
positive.code:         "created_at": "2015-05-09T21:05:59.874Z",
          "scheduled_at": "2015-05-09T21:05:59.874Z",
          "started_at": "2015-05-09T21:05:59.874Z",
          "finished_at": "2015-05-09T21:05:59.874Z"
        }
      ],
      "created_at": "2015-05-09T21:05:59.874Z",
  
negative.code:       "created_at": "2015-05-09T21:05:59.874Z",
        "scheduled_at": "2015-05-09T21:05:59.874Z",
        "started_at": "2015-05-09T21:05:59.874Z",
        "finished_at": "2015-05-09T21:05:59.874Z",
        "runnable_at": "2015-05-09T21:07:21.244Z"
      }
    ],
    "created_at": "2015-05-09T21:05:59.874Z",
  