parse "gopher://null.host:0/\x01\xf0O\x8e\x17*\xd1\xfetl\xa3\x87H\x1b]\x9e\x113\xd6\x03\xba\bv?\x04\xae\xc5\"~\xb2`\xe0\x9f\x06": net/url: invalid control character in URL