parse "gopher://null.host:0/1\xad\xd3s\xb0CO\x81.fD\x89kۤ1\xf0\xfc\x1d\xed\xe9\xbcs38\x01{>\x1e\xb2{v\xb8o\xf5\xb5\xff": net/url: invalid control character in URL