Game crash when removing a node from the scene

[Rsgm]

Godot version:

v3.0.6 stable, x64

OS/device including version:

Linux arch 4.17.14, x64

Issue description:

ERROR: remove_from_group: Condition ' !data.grouped.has(p_identifier) ' is true.
   At: scene/main/node.cpp:1828.
ERROR: remove_from_group: Condition ' !data.grouped.has(p_identifier) ' is true.
   At: scene/main/node.cpp:1828.
ERROR: get_tree: Condition ' !data.tree ' is true. returned: __null
   At: scene/main/node.h:254.
handle_crash: Program crashed with signal 11
Dumping the backtrace. Please include this when reporting the bug on https://github.com/godotengine/godot/issues
[1] /usr/lib/libc.so.6(+0x37e00) [0x7ff5cb1d7e00] (??:0)
[2] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x56d679] (<artificial>:?)
[3] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1ac6c34] (??:?)
[4] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11d9779] (<artificial>:?)
[5] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11d9652] (<artificial>:?)
[6] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11ea91f] (<artificial>:?)
[7] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x12202f1] (??:?)
[8] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x93588e] (??:?)
[9] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4ffc3] (??:?)
[10] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b491b2] (??:?)
[11] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x7b3728] (??:?)
[12] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x808618] (<artificial>:?)
[13] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4feff] (??:?)
[14] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b491b2] (??:?)
[15] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x7b3728] (??:?)
[16] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x808618] (<artificial>:?)
[17] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4feff] (??:?)
[18] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3c9a9] (??:?)
[19] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3d6c9] (??:?)
[20] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1482f1e] (<artificial>:?)
[21] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0xc8893e] (??:?)
[22] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4ffc3] (??:?)
[23] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3c9a9] (??:?)
[24] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3d6c9] (??:?)
[25] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11d9725] (<artificial>:?)
[26] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11d9652] (<artificial>:?)
[27] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x11ea91f] (<artificial>:?)
[28] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x12202f1] (??:?)
[29] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x93588e] (??:?)
[30] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4ffc3] (??:?)
[31] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b491b2] (??:?)
[32] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x7b3728] (??:?)
[33] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x808618] (<artificial>:?)
[34] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4feff] (??:?)
[35] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3c9a9] (??:?)
[36] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b3d6c9] (??:?)
[37] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x14d0b8d] (<artificial>:?)
[38] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x14ae753] (<artificial>:?)
[39] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1b4ffc3] (??:?)
[40] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x1cd7adb] (<artificial>:?)
[41] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x770e7c] (??:?)
[42] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x6e97dd] (??:?)
[43] /usr/lib/libc.so.6(__libc_start_main+0xf3) [0x7ff5cb1c4223] (??:0)
[44] /home/ryan/programs/godot/Godot_v3.0.6-stable_x11.64() [0x6f61ce] (??:?)
-- END OF BACKTRACE --

The game crashes when it hits scripts/ship.gd:30, specifically remove_child(character). Character in this case is the instance of player.tscn in test_world.tscn. I don't get an error in the editor when it crashes, so I'm not sure what could be causing this.

Steps to reproduce:

1. Run game
2. move player to ship
3. crash

Minimal reproduction project:

pirate_game.zip

[eon-s]

On the debugger got this error:

0:00:00:0469 - This function can't be used during the in/out signal.
----------
Type:Error
Description: This function can't be used during the in/out signal.
Time: 0:00:00:0469
C Error: Condition ' locked ' is true.
C Source: scene/2d/area_2d.cpp:324
C Function: _clear_monitoring

Try using call_deferred with a function used to process the removal of the node.

[Rsgm]

That was the issue, thanks.