centos的cron.daily bug

$ ls /etc/cron.daily/
00webalizer  0anacron  0logwatch  certwatch  cups  logrotate  makewhatis.cron  mlocate.cron  prelink  rhsmd  rpm  tmpwatch

$ sudo ls -l /etc/cron.hourly/
total 8
-rwxr-xr-x 1 root root 390 May 13  2011 mcelog.cron

$ cat /etc/crontab 
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

$ sudo grep -i anacron -C 5 /var/log/cron | tail
...
Feb 12 04:01:01 crond[17169]: (root) CMD (run-parts /etc/cron.hourly)
Feb 12 04:02:01 crond[17199]: (root) CMD (run-parts /etc/cron.daily)
Feb 12 04:02:01 anacron[17216]: Updated timestamp for job `cron.daily' to 2015-02-12
Feb 12 04:04:01 crond[17647]: (xxx) CMD otherjobs
Feb 12 04:05:01 crond[17800]: (root) CMD (LANG=C LC_ALL=C /usr/bin/mrtg /etc/mrtg/mrtg.cfg --lock-file /var/lock/mrtg/mrtg_l --confcache-file /var/lib/mrtg/mrtg.ok)
...