[Zope3-dev] MinimalMemoryStorage test failure in Zope 3

[Tim Peters]

[testPackWhileWriting shows two intermittent failure modes when running
 on top of MinimalMemoryStorage]

FYI, I also see a different intermittent failure when running this test via
ZEO on FileStorage:

======================================================================
ERROR: testPackWhileWriting (<class
'zodb.zeo.tests.test_zeo.FileStorageTests'>)

----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Code\Zope3\src\zodb\storage\tests\packable.py", line 266, in
testPackWhileWriting
    db.pack(packt)
  File "C:\Code\Zope3\src\zodb\db.py", line 323, in pack
    self._storage.pack(t)
  File "C:\Code\Zope3\src\zodb\zeo\client.py", line 774, in pack
    return self._server.pack(t, wait)
  File "C:\Code\Zope3\src\zodb\zeo\stubs.py", line 128, in pack
    self.rpc.call('pack', t, wait)
  File "C:\Code\Zope3\src\zodb\zeo\zrpc\connection.py", line 355, in call
    raise inst # error raised by server
CorruptedError:
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\~13568-926:31903:transaction with
checkpoint flag set