parse "gopher://null.host:0/½~\xae\x06\xa3\xf9\x1b\xff!\xf9*\x88\xfb\xaa\xb1\x831\r:\xb1 \x95\x1d\x96X\xe6S\xbf\xa9\xeaN6\xa7\xec\x15/Z@\xb1\xdaA-\xff\xb7\xbc\x87\x05\xef>\xd5\xe7J\"\xec\xe4b\x9d\x97\xdf\u007f\xb9\xe3X": net/url: invalid control character in URL