parse "gopher://4\x80\xc0\x9b\x84b\x80:0/µ0\x8b\x03~T\xb177\xaa\x8e\x841/\xeb\xbbw\xc8\xc3!\x91\x97\xf4\xf2\x8bE]\xc4`\xa7O": net/url: invalid control character in URL