parse "gopher://null.host:0/\u0093\x89\xd0@=9a0\x1f\xf1s\xf6<[\x0ei\xa1\xfc\x1e'\x90\xb9\xaa\x17:fQ\f\x88\u0081\xf9\x1b\x96\xb0\xc7": net/url: invalid control character in URL