python-apt version 0.7.100.3ubuntu4 failed to build on i386

python-apt version 0.7.100.3ubuntu4 failed to build on i386
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2466156

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2466156/+files/buildlog_ubuntu-natty-i386.python-apt_0.7.100.3ubuntu4_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 2106 lines into the build log:

  File "tests/test_all.py", line 47, in <module>
    exec('from %s import *' % path[:-3])
  File "<string>", line 1, in <module>
  File "/build/buildd/python-apt-0.7.100.3ubuntu4/tests/test_utils.py", line 12, in <module>
    import apt.utils
  File "../apt/__init__.py", line 24, in <module>
    from apt.package import Package
  File "../apt/package.py", line 518
    print 'Ignoring already existing file:', destfile
                                          ^
SyntaxError: invalid syntax
make[1]: *** [override_dh_auto_test] Error 1
make[1]: Leaving directory `/build/buildd/python-apt-0.7.100.3ubuntu4'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110418-1239
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/python-apt-0.7.100.3ubuntu4