parse "gopher://null.host:0/\x1ar\x10\xf9\x8e&\xc7\x18I\xf5J\x8e\x80\xa8Vs\x05P\x0fa\xf3\x05\xf8\xf9\xb9\xe0T\u06dd\x8ec\xa0": net/url: invalid control character in URL