parse "gopher://null.host:0/`Oy\x18;\xc1\xe8i[\x1f\xd9\xf5@\x9f\xbb\xc4<\x04\x88}rE\xefo\xf0W\\e\xb7Ii\xaf\xadøS\xa2w": net/url: invalid control character in URL