Description of problem:
error message in output from hwcert-backend run -t realtime

Version-Release number of selected component (if applicable):
hwcert-client-20140731 (retesting with more recent version)

How reproducible:
trying to reproduce now

Steps to Reproduce:
1. install hwcert-client on rhel 6
2. install and boot the -rt kernel
2. hwcert-backend plan
3. hwcert-backend run -t realtime

other tests have not yet been tried


Actual results:
error in output printed to screen.  No error in output.log

Expected results:
No error printed on screen

Additional info:
output ends with:

Your sosreport has been generated and saved in:
/tmp/sosreport-intel-sharkbay-dh-01-20140813040733-0220.tar.xz
Copied sosreport --batch -n selinux /tmp/sosreport-intel-sharkbay-dh-01-20140813040733-0220.tar.xz to /var/log/hwcert/runs/4/info
PASS
Exception TypeError: 'an integer is required' in <bound method Hackbench.__del__ of <Hackbench(hackbench, stopped 140495911503616)>> ignored
copying attachments...
checking directory /var/log/hwcert/runs/4/info
Adding /var/log/hwcert/runs/4/info/sosreport-intel-sharkbay-dh-01-20140813040733-0220.tar.xz
copied attachment file sosreport-intel-sharkbay-dh-01-20140813040733-0220.tar.xz
Skipping output.log
saveOutput: /var/log/hwcert/runs/4/info/output.log
Return value was 0