/usr/ is in minetest-mod-torches 5-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/minetest-mod-torches/
/usr/share/doc/minetest-mod-torches/README.txt
/usr/share/doc/minetest-mod-torches/changelog.Debian.gz
/usr/share/doc/minetest-mod-torches/copyright
/usr/share/games/
/usr/share/games/minetest/
/usr/share/games/minetest/mods/
/usr/share/games/minetest/mods/torches/
/usr/share/games/minetest/mods/torches/depends.txt
/usr/share/games/minetest/mods/torches/description.txt
/usr/share/games/minetest/mods/torches/init.lua
/usr/share/games/minetest/mods/torches/mod.conf
/usr/share/games/minetest/mods/torches/models/
/usr/share/games/minetest/mods/torches/models/torch_floor.obj
/usr/share/games/minetest/mods/torches/models/torch_wall.obj