parse "gopher://null.host:0/ý\xf0\x91\x03\xfd9\xcf\xd8\xc4\x0f\xfc\x9d\x90Ax\ag\x96J\x8c\xa1\xea\x8d}\xcbz\aQ\xde\xf08\xb6\r\xe6\x1f/\x91]\xda\xee\xef": net/url: invalid control character in URL