/usr/share/doc/python-musicbrainzngs/html/_static/searchtools.js is in python-musicbrainzngs-doc 0.6-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/python-musicbrainzngs/html/_static/../../../../javascript/sphinxdoc/1.0/searchtools.js