parse "gopher://null.host:0/9\xffx\xc1\\NNu\ap\xff\xc99\xb3\xc7\x16\x91\xd2U\xe2\xc6PK\x97?>\xc742\xf43\xb2\xe9\x15\x10\xbb\xf8M!^\xedW=\x9a\x95\\~nWP&\xbe,": net/url: invalid control character in URL