/usr/ is in python-zope.app.error 3.5.3-0ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/zope/
/usr/lib/python2.7/dist-packages/zope/app/
/usr/lib/python2.7/dist-packages/zope/app/error/
/usr/lib/python2.7/dist-packages/zope/app/error/browser/
/usr/lib/python2.7/dist-packages/zope.app.error-3.5.3.egg-info/
/usr/share/
/usr/share/doc/
/usr/share/doc/python-zope.app.error/
/usr/share/doc/python-zope.app.error/copyright
/usr/share/doc/python-zope.app.error/changelog.Debian.gz
/usr/share/pyshared/
/usr/share/pyshared/zope/
/usr/share/pyshared/zope/app/
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/usr/share/pyshared/zope/app/error/tests.py
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/usr/share/pyshared/zope/app/error/README.txt
/usr/share/pyshared/zope/app/error/configure.zcml
/usr/share/pyshared/zope/app/error/browser/
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/usr/share/pyshared/zope.app.error-3.5.3.egg-info/
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/usr/share/python/
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/usr/lib/python2.7/dist-packages/zope.app.error-3.5.3.egg-info/namespace_packages.txt
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