It looks like they are never generated, or the paths are not correct:
tar: Removing leading `/' from member names
tar: /home/ara/.checkbox/*poweroff.1.log: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
tar: Removing leading `/' from member names
tar: /home/ara/.checkbox/*reboot.1.log: Cannot stat: No such file or directory
tar: Exiting with failure status due to previous errors
Running checkbox 0.15+bzr1834+ 201211241747~ precise1
It looks like they are never generated, or the paths are not correct:
tar: Removing leading `/' from member names .checkbox/ *poweroff. 1.log: Cannot stat: No such file or directory
tar: /home/ara/
tar: Exiting with failure status due to previous errors
tar: Removing leading `/' from member names .checkbox/ *reboot. 1.log: Cannot stat: No such file or directory
tar: /home/ara/
tar: Exiting with failure status due to previous errors