/usr/share/fonts-roboto-fontface/fonts/Roboto-Thin.eot is in fonts-roboto-fontface 0.4.3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/fonts-roboto-fontface/fonts/../../fonts/eot/roboto-fontface/Roboto-Thin.eot