parse "gopher://null.host:0/½\xa3\xaa9\xa3[C;\xeez\x02\x98Hr8\x1e\xb8\x8f2.pɳ\v\xe2\v\xb2\xe5Ħ]\xa9\x82\xfe\x9b/\xc8\xf5\x9bgre[ O\x89\xfc\xbe \xbe\x18\x1e\xb6\xcb\v": net/url: invalid control character in URL