if err != RemoteErr(testPayload) {
			t.Errorf("want error %v(%T), got %v(%T)", RemoteErr(testPayload), RemoteErr(testPayload), err, err)
		}
		t.Log("Roundtrip:", time.Since(start))
	})
}

func TestSingleRoundtripNotReady(t *testing.T) {
	defer testlogger.T.SetLogTB(t)()
	errFatal := func(t testing.TB, err error) {
		t.Helper()
		if err != nil {
			t.Fatal(err)
		}
	}
	grid, err := SetupTestGrid(2)