/usr/share/doc/python-paste-doc/html/_static/doctools.js is in python-paste-doc 2.0.3+dfsg-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python-paste-doc/html/_static/../../../../javascript/sphinxdoc/1.0/doctools.js