parse "gopher://null.host:0/\u0096\x81\xae\xbePb\x0e$*u\xdcn\xb9\xaf\x95pkn\x1e\xba\x01'x\xbb\xdc\v\xfbA\xe8\x86?\x97\x822\xa8": net/url: invalid control character in URL