Description of problem:
Under some circumstances `abrt-cli rm ...` do not deletes given report. Looks like this happens when given directory is still being generated.


Version-Release number of selected component (if applicable):
abrt-cli-2.0.8-16.el6_4.1.x86_64


How reproducible:
rarely


Steps to Reproduce:
1. # sleep 1000 &   # in mine case I had some crash generated in background
                    # this is probably not a correct reproducer, but reflects
                    # what I have seen
2. # kill -s SEGV $!
3. # abrt-cli list \
    | sed -n 's/^Directory:\s\+//p' \
    | xargs -r -n 1 abrt-cli rm --


Actual results:
With correct timing this might happen:
# abrt-cli list \
    | sed -n 's/^Directory:\s\+//p' \
    | xargs -r -n 1 abrt-cli rm --
rm '/var/spool/abrt/pyhook-2013-10-08-12:40:17-1338'
rm '/var/spool/abrt/pyhook-2013-10-08-12:39:48-497'
Can't remove directory '/var/spool/abrt/pyhook-2013-10-08-12:39:42-800/dell-pesc430-01-2013100812391381250396/etc': Directory not empty
Can't remove '/var/spool/abrt/pyhook-2013-10-08-12:39:42-800/dell-pesc430-01-2013100812391381250396/etc': Directory not empty
Can't remove '/var/spool/abrt/pyhook-2013-10-08-12:39:42-800/dell-pesc430-01-2013100812391381250396': Directory not empty
# abrt-cli list
@0
Directory:      /var/spool/abrt/pyhook-2013-10-08-12:39:42-800
executable:     /usr/share/rhn/up2date_client/hardware.py
package:        rhn-client-tools-1.0.0.1-8.el6
time:           Tue 08 Oct 2013 12:39:42 PM EDT
uid:            0


Expected results:
No errors should be printed - they should not be just hidden, but `abrt-cli rm ...` should not got to this situation.


Additional info:
I do understand this do not guarantee me all the reports are deleted (as some other might be generated during this action), but at least should not print errors.