mu := NewDRWMutex(ds, "test-unlock-panic-2")
	defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}
		mu.RUnlock(context.Background()) // Unlock, so -test.count > 1 works
	}()
	mu.RLock(id, source)
	mu.Unlock(context.Background())
}

// Borrowed from rwmutex_test.go
func TestRUnlockPanic(t *testing.T) {
	defer func() {
		if recover() == nil {