/usr/lib/python3/dist-packages/nose/plugins/ is in python3-nose 1.3.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/nose/plugins/__init__.py
/usr/lib/python3/dist-packages/nose/plugins/allmodules.py
/usr/lib/python3/dist-packages/nose/plugins/attrib.py
/usr/lib/python3/dist-packages/nose/plugins/base.py
/usr/lib/python3/dist-packages/nose/plugins/builtin.py
/usr/lib/python3/dist-packages/nose/plugins/capture.py
/usr/lib/python3/dist-packages/nose/plugins/collect.py
/usr/lib/python3/dist-packages/nose/plugins/cover.py
/usr/lib/python3/dist-packages/nose/plugins/debug.py
/usr/lib/python3/dist-packages/nose/plugins/deprecated.py
/usr/lib/python3/dist-packages/nose/plugins/doctests.py
/usr/lib/python3/dist-packages/nose/plugins/errorclass.py
/usr/lib/python3/dist-packages/nose/plugins/failuredetail.py
/usr/lib/python3/dist-packages/nose/plugins/isolate.py
/usr/lib/python3/dist-packages/nose/plugins/logcapture.py
/usr/lib/python3/dist-packages/nose/plugins/manager.py
/usr/lib/python3/dist-packages/nose/plugins/multiprocess.py
/usr/lib/python3/dist-packages/nose/plugins/plugintest.py
/usr/lib/python3/dist-packages/nose/plugins/prof.py
/usr/lib/python3/dist-packages/nose/plugins/skip.py
/usr/lib/python3/dist-packages/nose/plugins/testid.py
/usr/lib/python3/dist-packages/nose/plugins/xunit.py