return !net.ParseIP(ip).IsLoopback()
	}, "")
	if len(nonLoopBackIPs) == 0 {
		t.Fatalf("No non-loop back IP address found for this host")
	}
	nonLoopBackIP := nonLoopBackIPs.ToSlice()[0]

	mustAbs := func(s string) string {
		s, err := filepath.Abs(s)
		if err != nil {
			t.Fatal(err)
		}
		return s
	}