parse "gopher://null.host:0/x\xf2\xef@\xb4&\x84\x8f\x13\x1c8\"\x9c\xe0A\xe9\xd1@\xa3G\xb0\x1a,o\x1f\xe8\xff\x83\xac\xcd\x1a\xb8\xaa\xa1jd[\x9f\xee6,": net/url: invalid control character in URL