Backtrace info:
Thread 1 "widelands" received signal SIGSEGV, Segmentation fault.
Widelands::PartiallyFinishedBuilding::request_builder_callback (game=..., rq=..., w=0x29e6f30, target=...) at /home/leighton/
builds/widelands-bzr/src/widelands-bzr/src/logic/map_objects/tribes/partially_finished_building.cc:191
191 delete &rq;
#0 Widelands::PartiallyFinishedBuilding::request_builder_callback (game=..., rq=..., w=0x29e6f30, target=...) at /home/leigh
ton/builds/widelands-bzr/src/widelands-bzr/src/logic/map_objects/tribes/partially_finished_building.cc:191
#1 0x006d79c7 in Widelands::Ship::ship_update_idle (this=<optimized out>, game=..., state=...) at /home/leighton/builds/wide
lands-bzr/src/widelands-bzr/src/logic/map_objects/tribes/ship.cc:651
#2 0x006d8879 in Widelands::Ship::ship_update (this=0x27d5420, game=..., state=...) at /home/leighton/builds/widelands-bzr/s
rc/widelands-bzr/src/logic/map_objects/tribes/ship.cc:286
#3 0x00694874 in Widelands::Bob::do_act (this=0x27d5420, game=...) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/
src/logic/map_objects/bob.cc:194
#4 0x006a7d75 in Widelands::CmdAct::execute (this=0x2da0230, game=...) at /home/leighton/builds/widelands-bzr/src/widelands-
bzr/src/logic/map_objects/map_object.cc:100
#5 0x00735be5 in Widelands::CmdQueue::run_queue (this=0xbfffcdc0, interval=66, game_time_var=@0xbfffcaf8: 15440342) at /home
/leighton/builds/widelands-bzr/src/widelands-bzr/src/logic/cmd_queue.cc:123
#6 0x0066247c in Widelands::Game::think (this=0xbfffcaf4) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/logic
/game.cc:548
#7 0x0081c3ea in InteractiveBase::think (this=0x14e5960) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/wui/in
teractive_base.cc:388
#8 0x0082a552 in InteractivePlayer::think (this=0x14e5960) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/wui/
interactive_player.cc:270
#9 0x007b5f65 in UI::Panel::do_think (this=0x14e5960) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/ui_basic/
panel.cc:456
#10 0x007b6f75 in UI::Panel::do_run (this=<optimized out>) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/ui_ba
sic/panel.cc:181
#11 0x006676d3 in UI::Panel::run<UI::Panel::Returncodes> (this=<optimized out>) at /home/leighton/builds/widelands-bzr/src/wi
delands-bzr/src/ui_basic/panel.h:99
#12 Widelands::Game::run (this=<optimized out>, loader_ui=<optimized out>, start_game_type=Widelands::Game::Loaded, script_to
_run=..., replay=false, prefix_for_replays=...) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/logic/game.cc:51
8
#13 0x00669ecc in Widelands::Game::run_load_game (this=<optimized out>, filename=..., script_to_run=...) at /home/leighton/bu
ilds/widelands-bzr/src/widelands-bzr/src/logic/game.cc:374
#14 0x005b3c4f in WLApplication::load_game (this=0xbbe4f0) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/wlapp
lication.cc:1293
#15 0x005b538a in WLApplication::mainmenu_singleplayer (this=<optimized out>) at /home/leighton/builds/widelands-bzr/src/wide
lands-bzr/src/wlapplication.cc:1124
#16 0x005b582e in WLApplication::mainmenu (this=<optimized out>) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src
/wlapplication.cc:1025
#17 0x005b5eab in WLApplication::run (this=<optimized out>) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/wlap
plication.cc:446
#18 0x0057412b in main (argc=1, argv=0xbffffa04) at /home/leighton/builds/widelands-bzr/src/widelands-bzr/src/main.cc:49
Based from the backtrace the scenario could be: Ship was carrying a builder but target constructionsite was destroyed (teritory conquered?) so ship went idle and worker attempted to remove request for himself...
Does it make sense, Lenghton?