5.5 fails on rqg-perpush-bugfix-tests builder

Upon execvpe dojob ['dojob', 'rm -rf ../../bugfixes-workdir || exit 0'] in environment id 431438464

:Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/Twisted-11.0.0-py2.4-linux-x86_64.egg/twisted/internet/process.py", line 414, in _fork

    executable, args, environment)

  File "/usr/lib/python2.4/site-packages/Twisted-11.0.0-py2.4-linux-x86_64.egg/twisted/internet/process.py", line 460, in _execChild

    os.execvpe(executable, args, environment)

  File "/usr/lib64/python2.4/os.py", line 350, in execvpe

    _execvpe(file, args, env)

  File "/usr/lib64/python2.4/os.py", line 379, in _execvpe

    func(fullname, *argrest)

OSError: [Errno 2] No such file or directory