/usr/lib/python2.7/dist-packages/swauth-1.0.4.egg-info/SOURCES.txt is in python-swauth 1.0.4-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/swauth-1.0.4.egg-info/../../../../share/pyshared/swauth-1.0.4.egg-info/SOURCES.txt