parse "gopher://null.host:0/g\xa6\x80\xa9\x15\x17v[\xc1H\x136\xcc\xc3wⅠ\xdcX\xa1y\x9a\xcd¯\x81\xcb[xU``\xb1\x17Z\xc0;\xc9g": net/url: invalid control character in URL