parse "gopher://null.host:0/ó\xb0\xfb\x01R\xefg\xc5\xf9\x81\x93\xb7\x83\xbdC\xa4\x1a\x12\x12\xd2\xc6U\xcbB4\xa9JE48Hp\xc9": net/url: invalid control character in URL