if err != nil {
		return 1, err
	}
	if !debug {
		defer os.RemoveAll(tmpdir)
	}

	appdir := filepath.Join(tmpdir, "gotest.app")
	os.RemoveAll(appdir)

	if err := assembleApp(appdir, os.Args[1]); err != nil {
		return 1, err
	}

	// This wrapper uses complicated machinery to run iOS binaries. It
	// works, but only when running one binary at a time.