The cause is that new logrotate doesn't like it when its config file is writeable by anyone but root. Patent nonsense, but we need to fix it nonetheless.
vyos@vyos-test-2# sudo logrotate -v -f -s /opt/vyatta/etc/config/archive/lr.state /opt/vyatta/etc/config/archive/lr.conf Ignoring /opt/vyatta/etc/config/archive/lr.conf because of bad file mode. Handling 0 logs