parse "gopher://null.host:0/\x1f\xb7A9\x82\a}\xfa\xe7߄b\x9b\xf0æ\xe6\x95\xf2.\x8d^\xd2s\xed\x8f\xfe\xcd\xd6J\xd9\xe7'\xf7qڣ": net/url: invalid control character in URL