>     util parallel(n, callback) should return a callback function that will call "callback" after it has been called n times: [2K[0G  ․ util parallel(n, callback) should return a callback function that will call "callback" after it has been called n times
>     util parallel(n, callback) should call the callback immediately with an error if an error is given to the parallel callback: [2K[0G  ․ util parallel(n, callback) should call the callback immediately with an error if an error is given to the parallel callback
60c62,63
<     Dispatcher .tick(callback(err)) should select a pending task from the tracker and mark it in progress: [2K[0G  ․ Dispatcher .tick(callback(err)) should select a pending task from the tracker and mark it in progress
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>     Dispatcher .tick(callback(err, job)) should select a pending task from the tracker, mark it in progress and emit it in the callback: [2K[0G  ․ Dispatcher .tick(callback(err, job)) should select a pending task from the tracker, mark it in progress and emit it in the callback
>     Dispatcher .tick(callback(err, job)) should select a different job on each call: [2K[0G  ․ Dispatcher .tick(callback(err, job)) should select a different job on each call
62c65
<   59 passing (592 ms)
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>   62 passing (616 ms)