/usr/lib/ is in python3-dbus-tests 1.2.6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/installed-tests/
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/TestSuitePythonService.service
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/cross-test-client.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/cross-test-server.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/crosstest.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/dbus_py_test.so
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/run-test.sh
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-client.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-exception-py3.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-import-repeatedly
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-p2p.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-service.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-signals.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-standalone.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/test-unusable-main-loop.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/tmp-session-bus.conf
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/wait-for-name.py
/usr/lib/x86_64-linux-gnu/installed-tests/dbus-python/python3.6/test/with-session-bus.sh