parse "gopher://null.host:0/\x0f\xe4Xt\x01\x9a\xb0\xe3G\x9f\xd1M\xb7\x1b\xddtM\xe2\xff\x9d\xfd\xf3\xc0\xa6\xbf\x87\u007f\xfeEC \u007f": net/url: invalid control character in URL