/usr/share/lua/5.2/lgi/log.lua is in lua-lgi 0.9.0.20151101.git.885af4-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/lua/5.2/lgi/../../5.1/lgi/log.lua
/usr/share/lua/5.2/lgi/../../5.1/lgi/log.lua