return 0, fmt.Errorf("%v: %v\n%s", cmd, err, ee.Stderr)
		}
		return 0, fmt.Errorf("%v: %v", cmd, err)
	}
	before, _, ok := strings.Cut(string(out), ".")
	major, err := strconv.Atoi(before)
	if !ok || err != nil {
		return 0, fmt.Errorf("%v: unexpected output: %q", cmd, out)
	}

	return major, nil
}

func TestIssue51759(t *testing.T) {
	if runtime.GOOS != "darwin" {

func TestTimeoutHandlerRace(t *testing.T) { run(t, testTimeoutHandlerRace) }
func testTimeoutHandlerRace(t *testing.T, mode testMode) {
	delayHi := HandlerFunc(func(w ResponseWriter, r *Request) {
		ms, _ := strconv.Atoi(r.URL.Path[1:])
		if ms == 0 {
			ms = 1
		}
		for i := 0; i < ms; i++ {
			w.Write([]byte("hi"))
			time.Sleep(time.Millisecond)
		}
	})

github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=