If index file's header shows that it's unusable (e.g. major version change or CPU arch change), make sure they're not tried to be used and handle the rebuilding nicely.
If index file's header shows that it's unusable (e.g. major version change
or CPU arch change), make sure they're not tried to be used and handle the
rebuilding nicely.

damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot