 
     async.series([
         (cb) ->
+            winston.debug("rollback_last_save: restoring refs/heads/master")
             if info.master?
                 fs.writeFile("#{info.bup_dir}/refs/heads/master", info.master, cb)
             else
                 cb()
         (cb) ->
+            winston.debug("rollback_last_save: removing newly created pack files")
             fs.readdir "#{info.bup_dir}/objects/pack", (err, files) ->
                 if err
                     cb(err)

                    winston.debug("monitor_snapshot_queue: no rollback file")
                    cb()

        (cb) ->
            winston.debug("monitor_snapshot_queue: getting info in case we end up having to rollback this attempt")
            get_rollback_info

                        else
                            c()
                    async.map(files, f, cb)
        (cb) ->
            winston.debug("removing refs/heads/master.lock if present")
            lock = "#{info.bup_dir}/refs/heads/master.lock"
            fs.exists lock, (exists) ->
                if exists
                    fs.unlink(lock, cb)
                else
                    cb()

    ], opts.cb)


