Obtained 21 stack frames.
/usr/games/crawl-git-fb1f07938f(_Z17write_stack_traceP8_IO_FILEi+0x21) [0x55b981]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-fb1f07938f(_Z20crash_signal_handleri+0x1a8) [0x55bd48]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f1e064bd4c0]: 
/usr/games/crawl-git-fb1f07938f(_Z23raw_feature_descriptionRK9coord_def+0x4e) [0x5bb72e]: raw_feature_description(coord_def const&)
/usr/games/crawl-git-fb1f07938f(_Z13do_crash_dumpv+0xc23) [0x5644a3]: do_crash_dump()
/usr/games/crawl-git-fb1f07938f(_Z20crash_signal_handleri+0x9c) [0x55bc3c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f1e064bd4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f1e06853b7b]: 
/usr/games/crawl-git-fb1f07938f() [0x563319]
/usr/games/crawl-git-fb1f07938f() [0x5635f7]
/usr/games/crawl-git-fb1f07938f(_Z21artefact_set_propertyR8item_def18artefact_prop_typei+0x19f) [0x4fa04f]: artefact_set_property(item_def&, artefact_prop_type, int)
/usr/games/crawl-git-fb1f07938f(_Z14unmarshallItemR6readerR8item_def+0xd3c) [0x997dec]: unmarshallItem(reader&, item_def&)
/usr/games/crawl-git-fb1f07938f(_ZN5Stash4loadER6reader+0x1bd) [0x97a19d]: Stash::load(reader&)
/usr/games/crawl-git-fb1f07938f(_ZN12LevelStashes4loadER6reader+0xa8) [0x97baa8]: LevelStashes::load(reader&)
/usr/games/crawl-git-fb1f07938f(_ZN12StashTracker4loadER6reader+0xcf) [0x97d14f]: StashTracker::load(reader&)
/usr/games/crawl-git-fb1f07938f() [0x6164a7]
/usr/games/crawl-git-fb1f07938f(_Z12restore_gameRKSs+0x9) [0x616cd9]: restore_game(std::string const&)
/usr/games/crawl-git-fb1f07938f(_Z12startup_stepv+0x1575) [0x975205]: startup_step()
/usr/games/crawl-git-fb1f07938f(main+0x150) [0x746e70]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f1e064a876d]: 
/usr/games/crawl-git-fb1f07938f() [0x4c0729]