/usr/lib/ is in caribou 0.4.21-1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/caribou/
/usr/lib/caribou/caribou
/usr/lib/python3/
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/caribou/
/usr/lib/python3/dist-packages/caribou/__init__.py
/usr/lib/python3/dist-packages/caribou/i18n.py
/usr/lib/python3/dist-packages/caribou/settings/
/usr/lib/python3/dist-packages/caribou/settings/__init__.py
/usr/lib/python3/dist-packages/caribou/settings/caribou_settings.py
/usr/lib/python3/dist-packages/caribou/settings/preferences_window.py
/usr/lib/python3/dist-packages/caribou/settings/setting_types.py
/usr/lib/python3/dist-packages/caribou/settings/settings_manager.py