parse "gopher://null.host:0/\a\xd8\xe9\x05\x9eSkp\xefl\xe0t\x92\xfaޙv\xad\xb5\x01j\x84U\xf3S\x19rxS\xf9Tk8\xf9S\xac\xe61\x9b\x14\xe9\xe3\r\xad\xbeK`^\x16": net/url: invalid control character in URL