}
	<-ch
}

func (w *timeIncrementingWorkers) drainUnpausedWorkers() {
	pausedWorkers := make(map[types.UID]struct{})
	for {
		for uid := range pausedWorkers {
			delete(pausedWorkers, uid)
		}
		stillWorking := false

		// ignore held workers
		w.lock.Lock()
		for uid := range w.holds {
			pausedWorkers[uid] = struct{}{}
		}
		w.lock.Unlock()