parse "gopher://null.host:0/\f\xd9\xc3I\xa1x\x92X4\x9f\x14\xbfZ\x8dLT\xef\xe2n\x9ftL\v\x89\fD\x15\xadYxN\x01\xbbC\x16x": net/url: invalid control character in URL