/usr/lib/ is in lua-system 0.2.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/liblua5.1-system.so.0.0.0
/usr/lib/x86_64-linux-gnu/liblua5.2-system.so.0.0.0
/usr/lib/x86_64-linux-gnu/liblua5.3-system.so.0.0.0
/usr/lib/x86_64-linux-gnu/lua/
/usr/lib/x86_64-linux-gnu/lua/5.1/
/usr/lib/x86_64-linux-gnu/lua/5.1/system/
/usr/lib/x86_64-linux-gnu/lua/5.2/
/usr/lib/x86_64-linux-gnu/lua/5.2/system/
/usr/lib/x86_64-linux-gnu/lua/5.3/
/usr/lib/x86_64-linux-gnu/lua/5.3/system/
/usr/lib/x86_64-linux-gnu/liblua5.1-system.so.0
/usr/lib/x86_64-linux-gnu/liblua5.2-system.so.0
/usr/lib/x86_64-linux-gnu/liblua5.3-system.so.0
/usr/lib/x86_64-linux-gnu/lua/5.1/system/core.so
/usr/lib/x86_64-linux-gnu/lua/5.2/system/core.so
/usr/lib/x86_64-linux-gnu/lua/5.3/system/core.so