defer wg.Done()
			for j := 0; j < tries; j++ {
				timer.Reset(Hour + Duration(i*j))
			}
		}(i)
	}
	wg.Wait()
}

// Issue 37400: panic with "racy use of timers".
func TestConcurrentTimerResetStop(t *testing.T) {
	const goroutines = 8
	const tries = 1000
	var wg sync.WaitGroup
	wg.Add(goroutines * 2)
	timer := NewTimer(Hour)
	for i := 0; i < goroutines; i++ {
		go func(i int) {