parse "gopher://null.host:0/\u0086\xf1}.\xfb\xa3\xf0\xa5D\x02,\xadF\xa9\xfa\x18\xba\x02T\xf9*\xb2\xb9\x89kt\x01\xae\xbc\x7f\x84\x91H\xaf": net/url: invalid control character in URL