/usr/lib/python2.7/dist-packages/zc/resourcelibrary/tests/duplicate_declarations_overrides.zcml is in python-zc.resourcelibrary 1.3.4-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/zc/resourcelibrary/tests/../../../../../../share/pyshared/zc/resourcelibrary/tests/duplicate_declarations_overrides.zcml