parse "gopher://null.host:0/\x11&\x8c\xb9S\x16R`\x90\x17\x19\x11n\f\xb3C\x8f\xa8\xab\xfdy\x81n|x\x98\x1d}\xc6\xdf\x1c\x13\x87\x9f": net/url: invalid control character in URL