Interesting typo with a bit confusing python exception

[Martin Jansa <martin.jansa@gmail.com>]

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Don't take this as bug report, the first ERROR message is right
and I should have noticed what's wrong sooner, but instead I was
checking "ps" for hanging zombie bitbake (which still happends
from time to time).

Is there something we can do for average bitbake user to get clearer
message?

$ bitbake -c cleansstate tracker | bitbake -c build tracker | tee log.tracker

ERROR: Only one copy of bitbake should be run against a build directory
Traceback (most recent call last):
  File "/OE/build/oe-core/bitbake/bin/bitbake", line 382, in <module>
    ret = main()
  File "/OE/build/oe-core/bitbake/bin/bitbake", line 370, in main
    return ui_module.main(server_connection.connection, server_connection.events, configParams)
  File "/OE/build/oe-core/bitbake/lib/bb/ui/knotty.py", line 396, in main
    parseprogress.update(event.current)
AttributeError: 'NoneType' object has no attribute 'update'

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com

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