@Test fun formatTime() {
    assertThat(formatDuration(-3_499_999_999L)).isEqualTo(" -3 s ")
    assertThat(formatDuration(-3_000_000_000L)).isEqualTo(" -3 s ")
    assertThat(formatDuration(-2_500_000_000L)).isEqualTo(" -3 s ")
    assertThat(formatDuration(-2_499_999_999L)).isEqualTo(" -2 s ")
    assertThat(formatDuration(-1_500_000_000L)).isEqualTo(" -2 s ")
    assertThat(formatDuration(-1_499_999_999L)).isEqualTo(" -1 s ")

    if (loggingEnabled) {
      val elapsedNs = queue.taskRunner.backend.nanoTime() - startNs
      if (completedNormally) {
        log(task, queue, "finished run in ${formatDuration(elapsedNs)}")
      } else {
        log(task, queue, "failed a run in ${formatDuration(elapsedNs)}")
      }
    }
  }
}

private fun Logger.log(
  task: Task,
  queue: TaskQueue,
  message: String,
) {

    }
    task.nextExecuteNanoTime = executeNanoTime
    taskRunner.logger.taskLog(task, this) {
      if (recurrence) {
        "run again after ${formatDuration(executeNanoTime - now)}"
      } else {
        "scheduled after ${formatDuration(executeNanoTime - now)}"
      }
    }

    // Insert in chronological order. Always compare deltas because nanoTime() is permitted to wrap.