/usr/lib/python2.7/dist-packages/bzrlib/plugins/ is in bzr-rewrite 0.6.3-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/__init__.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/commands.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/info.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/maptree.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/pseudonyms.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/rebase.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/__init__.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/test_blackbox.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/test_maptree.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/test_pseudonyms.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/test_rebase.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/tests/test_upgrade.py
/usr/lib/python2.7/dist-packages/bzrlib/plugins/rewrite/upgrade.py