parse "gopher://null.host:0/C\xbf\xf5\xbe~\xe5vD~ybav\xea_\x06\x80\xe8;燑\xc0\xe1\xca\xcdJ\xa6\xa7S\x16{\x97\u007f\xaf\xfd\x8d\b\xa6": net/url: invalid control character in URL