'experimental/master.log' -> 'experimental/master.20170908.log' 'sid2experimental/master.log' -> 'sid2experimental/master.20170908.log' 'stretch2bpo2buster/master.log' -> 'stretch2bpo2buster/master.20170908.log' 'jessie2proposed/master.log' -> 'jessie2proposed/master.20170908.log'