parse "gopher://null.host:0/\x15\xa2\xf0\xddW>\xf4]n\x00\xe7\xe3\f\xdd{Mo\x06J'f\x8d`u\xb7\xa9Ŏ\xc7k\xa4g\xb9\xd9=\xaf": net/url: invalid control character in URL