virt-who generates the ABRT report on each restart [unhandled Python exception in /usr/bin/virt-who]

Issue

• After update to virt-who-0.21.6-1.el6.noarch it started to create abrt logs upon restart

• Actual results:

abrt logs created. -> abrt: detected unhandled Python exception in '/usr/bin/virt-who'
virt-who stays running
Expected results:
no errors

• example of error:

backtrace:
:__init__.py:844:close:IOError: [Errno 9] Bad file descriptor
:
:Traceback (most recent call last):
:  File "/usr/lib64/python2.6/atexit.py", line 24, in _run_exitfuncs
:    func(*targs, **kargs)
:  File "/usr/lib64/python2.6/logging/__init__.py", line 1525, in shutdown
:    h.close()
:  File "/usr/lib64/python2.6/logging/__init__.py", line 844, in close
:    self.stream.close()
:IOError: [Errno 9] Bad file descriptor
:
:Local variables in innermost frame:
:self: <logging.handlers.WatchedFileHandler instance at 0x16897a0>

environ:
:TERM=xterm
:VIRTWHO_BACKGROUND=1
:PATH=/sbin:/usr/sbin:/bin:/usr/bin
:PWD=/
:LANG=en_US.UTF-8
:SHLVL=2
:VIRTWHO_DEBUG=0
:VIRTWHO_INTERVAL=3600
:_=/usr/bin/virt-who