/usr/lib/python2.7/dist-packages/martian/tests/stoneage/ is in python-martian 0.14-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/__init__.py
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/cave.py
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/hunt/
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/hunt/__init__.py
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/hunt/mammoth.py
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/hunt/mammoth_templates/
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/hunt/mammoth_templates/index.pt
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/notpackage/
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/notpackage/dummy.py
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/painting/
/usr/lib/python2.7/dist-packages/martian/tests/stoneage/painting/__init__.py