error in error handling

crash_mod_file.lua

local near_player = {x=0, y=0, z=0}

local please_crash = "foo"
minetest.register_node(":default:tmp", {
	on_dig = function()
		please_crash()
	end
})

minetest.after(3, function()
	minetest.set_node(near_player, {name="default:tmp"})
	minetest.dig_node(near_player)
end)
--[[
--minetest.dig_node crashes causing an error in error handling:
	AL lib: FreeContext: (0x8910ab0) Deleting 1 Source(s)
	2015-08-07 10:38:57: ACTION[main]:         .__               __                   __
	2015-08-07 10:38:57: ACTION[main]:   _____ |__| ____   _____/  |_  ____   _______/  |_
	2015-08-07 10:38:57: ACTION[main]:  /     \|  |/    \_/ __ \   __\/ __ \ /  ___/\   __\
	2015-08-07 10:38:57: ACTION[main]: |  Y Y  \  |   |  \  ___/|  | \  ___/ \___ \  |  |
	2015-08-07 10:38:57: ACTION[main]: |__|_|  /__|___|  /\___  >__|  \___  >____  > |__|
	2015-08-07 10:38:57: ACTION[main]:       \/        \/     \/          \/     \/
	2015-08-07 10:38:57: ACTION[main]: World at [<worldpath>]
	2015-08-07 10:38:57: ACTION[main]: Server for gameid="minetest_game_git" listening on 0.0.0.0:63454.
	2015-08-07 10:38:59: ACTION[ServerThread]: singleplayer [127.0.0.1] joins game.
	2015-08-07 10:38:59: ACTION[ServerThread]: singleplayer joins game. List of players: singleplayer
	2015-08-07 10:38:59: ACTION[main]: Irrlicht: Could not open file of texture: character.png
	2015-08-07 10:38:59: ACTION[main]: Irrlicht: Could not open file of texture: character.png
	2015-08-07 10:39:00: ERROR[main]: ServerError: Runtime error in environment_Step(): Double fault error in node_on_dig(): error in error handling
	2015-08-07 10:39:00: ERROR[main]: stack traceback:
	2015-08-07 10:39:00: ERROR[main]: 	[C]: in function 'dig_node'
	2015-08-07 10:39:00: ERROR[main]: 	<file_path>:12: in function 'func'
	2015-08-07 10:39:00: ERROR[main]: 	/usr/share/minetest/builtin/game/misc.lua:17: in function 'update_timers'
	2015-08-07 10:39:00: ERROR[main]: 	/usr/share/minetest/builtin/game/misc.lua:49: in function </usr/share/minetest/builtin/game/misc.lua:37>
	2015-08-07 10:39:00: ERROR[main]: 	/usr/share/minetest/builtin/game/register.lua:341: in function </usr/share/minetest/builtin/game/register.lua:329>
	2015-08-07 10:39:00: ACTION[ServerThread]: singleplayer leaves game. List of players:
	AL lib: FreeContext: (0xb090c58) Deleting 1 Source(s)
]]

--[[
--running the crash "function" directly here tells the error
please_crash()
	AL lib: FreeContext: (0x9cdc630) Deleting 1 Source(s)
	2015-08-07 10:35:24: ERROR[main]: ========== ERROR FROM LUA ===========
	2015-08-07 10:35:24: ERROR[main]: Failed to load and run script from
	2015-08-07 10:35:24: ERROR[main]: <file_path>:
	2015-08-07 10:35:24: ERROR[main]: <file_path>:9: attempt to call local 'please_crash' (a string value)
	2015-08-07 10:35:24: ERROR[main]: stack traceback:
	2015-08-07 10:35:24: ERROR[main]: 	<file_path>:9: in main chunk
	2015-08-07 10:35:24: ERROR[main]: ======= END OF ERROR FROM LUA ========
	2015-08-07 10:35:24: ERROR[main]: Server: Failed to load and run <file_path>
	2015-08-07 10:35:24: ERROR[main]: ModError: ModError: Failed to load and run <file_path>
	2015-08-07 10:35:24: ERROR[main]: Error from Lua:
	2015-08-07 10:35:24: ERROR[main]: <file_path>:9: attempt to call local 'please_crash' (a string value)
	2015-08-07 10:35:24: ERROR[main]: stack traceback:
	2015-08-07 10:35:24: ERROR[main]: 	<file_path>:9: in main chunk
	2015-08-07 10:35:24: ERROR[main]: Siehe debug.txt für Details.
	AL lib: FreeContext: (0x9d059e8) Deleting 1 Source(s)
]]