parse "gopher://:0/\x17\xa1\xa0*\xb0\x1f\xc5\x13\x16<\x18\x03sW\x9f\xb2\x86~\xb1\xf9[4\xc8s\xfe\x8a\x99\v\x9a\x80[-\xd1B\xdb": net/url: invalid control character in URL