parse "gopher://null.host:0/\x10\xa0\xf8\xfe\u007f\xa3\x0f\xa9?\xff\x0f\x12\xf6\xffk~h3\xc1EĈC\xc4\xdf/\x05\xf9\x05I\b\bb": net/url: invalid control character in URL