parse "gopher://null.host:0/\f1zX\x96\x04\xdb\f\x8ey\x00\x15\xdeE\x10\xeb\x05\xc6f\xb2\u0098\x9d\xfd d\xef\x0e\xcf\x15\xf4\xb5\x96\x83 ": net/url: invalid control character in URL