parse "gopher://null.host:0/F\xe8\xafʏ\x18Ky]\xe5\xc2\x1a\x0er0\b~*s4u\x10b\x19\xc8'>\xef4\xe5.J\xb8\fT~\xc56>\x19\x9a\x82N": net/url: invalid control character in URL