parse "gopher://null.host:0/\x0f\xd3\xe3M \xaf\xf1˭\x13\xc8oJ\vN\x17j~\xfflB\x12u\xc8u\xa4ǕB\x12\x88\xf4[\x88\x1f\xf8\xda": net/url: invalid control character in URL