local old_add_node = minetest.add_node
minetest.add_node = function(pos, node)
	print("called minetest.add_node")
	print(debug.traceback(""))
	old_add_node(pos, node)
end
local old_set_node = minetest.set_node
minetest.set_node = function(pos, node)
	print("called minetest.set_node")
	print(debug.traceback(""))
	old_set_node(pos, node)
end
local old_remove_node = minetest.remove_node
minetest.remove_node = function(pos)
	print("called minetest.remove_node")
	print(debug.traceback(""))
	old_remove_node(pos)
end