parse "gopher://null.host:0/\b\x18\x0eq\xbf\xdfeUx\xf8N\x1f\xa9\x02\xff\xed2\xde\x17\x18\xbcI\xdb\x18\xa8DHl\x1d\x8b\x06\xe1\x8c": net/url: invalid control character in URL