parse "gopher://null.host:0/C\x8d\xf5\x94v\xc7\x14Ջ\xac\x14t[\xfa\x90\xfa\x83\x96FDL\x11\x1fJ3\xec\xef\xd6\x1d\xdf3\xfe": net/url: invalid control character in URL