zope.keyreference version 3.6.2-0ubuntu4 failed to build in oneiric

[Matthias Klose]

zope.keyreference version 3.6.2-0ubuntu4 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2716306

Details about the rebuild:
http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20110816-oneiric.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110816/+build/2716306/+files/buildlog_ubuntu-oneiric-i386.zope.keyreference_3.6.2-0ubuntu4_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 529 lines into the build log:

(echo -n 'setuptools:Depends=' && van-pydeb depends --egg-info debian/python-zope.keyreference//usr/lib/python2.6/dist-packages/zope.keyreference.egg-info --exclude-extra test) >> debian/python-zope.keyreference.substvars
Traceback (most recent call last):
  File "/usr/bin/van-pydeb", line 9, in <module>
    load_entry_point('van.pydeb==1.3.3', 'console_scripts', 'van-pydeb')()
  File "/usr/lib/python2.6/dist-packages/van/pydeb/__init__.py", line 40, in main
    return command(argv)
  File "/usr/lib/python2.6/dist-packages/van/pydeb/__init__.py", line 231, in _depends_or_provides
    assert os.path.exists(options.egg_info), "Does not exist: %s" % options.egg_info
AssertionError: Does not exist: debian/python-zope.keyreference//usr/lib/python2.6/dist-packages/zope.keyreference.egg-info
make[2]: *** [dependencies-python2.6] Error 1
make[2]: Leaving directory `/build/buildd/zope.keyreference-3.6.2'
make[1]: *** [install-python2.6] Error 2
make[1]: Leaving directory `/build/buildd/zope.keyreference-3.6.2'
make: *** [install] Error 2
dpkg-buildpackage: error: /usr/bin/fakeroot debian/rules binary gave error exit status 2
******************************************************************************
Build finished at 20110827-2017
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/zope.keyreference-3.6.2