For the first one, replace L+ with L for the /etc/mtab entry.
For the second one, add "/var/lib/systemd auto synced none none" to etc/system-image/writable-paths.
For the first one, replace L+ with L for the /etc/mtab entry.
For the second one, add "/var/lib/systemd auto synced none none" to etc/system- image/writable- paths.