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",
  