这是我的电脑崩溃（Ubuntu 18.04）之前的日志，它们似乎与某些事情有关Albert，这些日志是什么意思？
Aug 24 00:50:08 t480s systemd[1]: Started Hostname Service.
Aug 24 00:50:31 t480s nautilus[5186]: ../../../../gobject/gsignal.c:2641: instance '0x55970244fe40'
Aug 24 00:50:31 t480s nautilus[5186]: ../../../../gobject/gsignal.c:2641: instance '0x55970244fe40'
Aug 24 00:57:24 t480s plank.desktop[3518]: [4042:4059:0824/005724.078476:ERROR:service_manager_conte
Aug 24 01:02:41 t480s systemd[1]: Started Run anacron jobs.
Aug 24 01:02:41 t480s anacron[25874]: Anacron 2.3 started on 2018-08-24
Aug 24 01:02:41 t480s anacron[25874]: Normal exit (0 jobs run)
Aug 24 01:07:46 t480s albert.desktop[3318]: 01:07:46 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:07:46 t480s albert.desktop[3318]: 01:07:46 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:08:45 t480s albert.desktop[3318]: 01:08:45 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:08:45 t480s albert.desktop[3318]: 01:08:45 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:09:02 t480s org.gnome.Shell.desktop[3038]: Window manager warning: Invalid WM_TRANSIENT_FO
Aug 24 01:10:59 t480s albert.desktop[3318]: 01:10:59 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:10:59 t480s albert.desktop[3318]: 01:10:59 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:11:02 t480s albert.desktop[3318]: 01:11:02 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:11:02 t480s albert.desktop[3318]: 01:11:02 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:11:05 t480s albert.desktop[3318]: 01:11:05 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:11:05 t480s albert.desktop[3318]: 01:11:05 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:11:11 t480s albert.desktop[3318]: 01:11:11 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:11:11 t480s albert.desktop[3318]: 01:11:11 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:17:01 t480s CRON[26779]: pam_unix(cron:session): session opened for user root by (uid=0)
Aug 24 01:17:01 t480s CRON[26780]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Aug 24 01:17:01 t480s CRON[26779]: pam_unix(cron:session): session closed for user root
Aug 24 01:17:42 t480s albert.desktop[3318]: 01:17:42 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:17:42 t480s albert.desktop[3318]: 01:17:42 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:19:34 t480s albert.desktop[3318]: 01:19:34 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:19:34 t480s albert.desktop[3318]: 01:19:34 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:20:18 t480s albert.desktop[3318]: 01:20:18 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:20:18 t480s albert.desktop[3318]: 01:20:18 [INFO] Indexed 145 Chrome bookmarks.
Aug 24 01:20:48 t480s albert.desktop[3318]: 01:20:48 [INFO] Start indexing Chrome bookmarks.
Aug 24 01:20:48 t480s albert.desktop[3318]: 01:20:48 [INFO] Indexed 145 Chrome bookmarks.