queue.cancelActiveTask = false
    queue.activeTask = null
    busyQueues.remove(queue)

    if (delayNanos != -1L && !cancelActiveTask && !queue.shutdown) {
      queue.scheduleAndDecide(task, delayNanos, recurrence = true)
    }

    if (queue.futureTasks.isNotEmpty()) {
      readyQueues.add(queue)

      // If the task crashed, start another thread to run the next task.