Package: ftp.debian.org Severity: normal firetray isn't developed and maintained upstream anymore and by the discuntinued legacy AddOn API in Thunderbird obsolete and useless now. It simply isn't working any more now Thunderbird 68.x is in the archive. Please remove this package completely from the archive.
There is a bug report about the not working package in https://bugs.debian.org/946030 Regards Carsten