This file is indexed.

/usr/lib/x86_64-linux-gnu/lua/5.2/socket/core.so is in lua-socket 3.0~rc1-3.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/lua/5.2/socket/../../../liblua5.2-socket.so.2.0.0