/usr/lib/python2.7/dist-packages/hgext/convert/ is in mercurial-common 4.5.3-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/hgext/convert/__init__.py
/usr/lib/python2.7/dist-packages/hgext/convert/bzr.py
/usr/lib/python2.7/dist-packages/hgext/convert/common.py
/usr/lib/python2.7/dist-packages/hgext/convert/convcmd.py
/usr/lib/python2.7/dist-packages/hgext/convert/cvs.py
/usr/lib/python2.7/dist-packages/hgext/convert/cvsps.py
/usr/lib/python2.7/dist-packages/hgext/convert/darcs.py
/usr/lib/python2.7/dist-packages/hgext/convert/filemap.py
/usr/lib/python2.7/dist-packages/hgext/convert/git.py
/usr/lib/python2.7/dist-packages/hgext/convert/gnuarch.py
/usr/lib/python2.7/dist-packages/hgext/convert/hg.py
/usr/lib/python2.7/dist-packages/hgext/convert/monotone.py
/usr/lib/python2.7/dist-packages/hgext/convert/p4.py
/usr/lib/python2.7/dist-packages/hgext/convert/subversion.py
/usr/lib/python2.7/dist-packages/hgext/convert/transport.py