When using Arch Linux, its sometimes required to run something in a older/stable releaes of a Linux distribution. For this purpose I have a Ubuntu 12.04 LTS installation in a schroot environment. However, using Bitbake (a heavily multithreded and Python based build utility) The build aborted with the error:
File "/usr/lib/python2.7/multiprocessing/queues.py", line 63, in __init__
self._rlock = Lock()
File "/usr/lib/python2.7/multiprocessing/synchronize.py", line 147, in __init__
SemLock.__init__(self, SEMAPHORE, 1, 1)
OSError: [Errno 13] Permission denied