/usr/ is in python-zope.app.debug 3.4.1-2ubuntu4.
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/debug/
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/
/usr/share/
/usr/share/doc/
/usr/share/doc/python-zope.app.debug/
/usr/share/doc/python-zope.app.debug/copyright
/usr/share/doc/python-zope.app.debug/changelog.Debian.gz
/usr/share/pyshared/
/usr/share/pyshared/zope/
/usr/share/pyshared/zope/app/
/usr/share/pyshared/zope/app/debug/
/usr/share/pyshared/zope/app/debug/__init__.py
/usr/share/pyshared/zope/app/debug/debug.py
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/PKG-INFO
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/SOURCES.txt
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/dependency_links.txt
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/namespace_packages.txt
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/not-zip-safe
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/requires.txt
/usr/share/pyshared/zope.app.debug-3.4.1.egg-info/top_level.txt
/usr/share/pyshared/zope.app.debug-3.4.1-nspkg.pth
/usr/share/python/
/usr/share/python/ns/
/usr/share/python/ns/python-zope.app.debug
/usr/lib/python2.7/dist-packages/zope/app/debug/__init__.py
/usr/lib/python2.7/dist-packages/zope/app/debug/debug.py
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/PKG-INFO
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/SOURCES.txt
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/dependency_links.txt
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/namespace_packages.txt
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/not-zip-safe
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/requires.txt
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1.egg-info/top_level.txt
/usr/lib/python2.7/dist-packages/zope.app.debug-3.4.1-nspkg.pth