c1 := make(chan int, 10)
	x := 0
	go func() {
		c1 <- x // read of x does not race with...
		done <- true
	}()
	x = <-c1 // ... write to x here
	<-done
}

func TestNoRaceProducerConsumerUnbuffered(t *testing.T) {
	type Task struct {
		f    func()
		done chan bool
	}

	queue := make(chan Task)

	go func() {
		t := <-queue
		t.f()
		t.done <- true
	}()