Obtained 31 stack frames.
/usr/games/crawl-git-cd15a05269(_Z17write_stack_traceP8_IO_FILE+0x28) [0x55c827bb9e58]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-cd15a05269(_Z20crash_signal_handleri+0x1bd) [0x55c827bba29d]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f63177a9060]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0x10) [0x7f63177a92e0]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xe1) [0x7f63177aa3a1]: 
/usr/games/crawl-git-cd15a05269(+0x34a73b) [0x55c827bc173b]: 
/usr/games/crawl-git-cd15a05269(+0x34a9cd) [0x55c827bc19cd]: 
/usr/games/crawl-git-cd15a05269(+0x781089) [0x55c827ff8089]: 
/usr/games/crawl-git-cd15a05269(_Z14spells_in_bookRK8item_def+0x2ca) [0x55c827ff908a]: spells_in_book(item_def const&)
/usr/games/crawl-git-cd15a05269(_Z15is_useless_itemRK8item_defb+0x4c6) [0x55c827d6e7a6]: is_useless_item(item_def const&, bool)
/usr/games/crawl-git-cd15a05269(_Z17is_dangerous_itemRK8item_defb+0x2e) [0x55c827d6ef3e]: is_dangerous_item(item_def const&, bool)
/usr/games/crawl-git-cd15a05269(_Z11item_prefixB5cxx11RK8item_defb+0x163) [0x55c827d6f153]: item_prefix[abi:cxx11](item_def const&, bool)
/usr/games/crawl-git-cd15a05269(+0x76c188) [0x55c827fe3188]: 
/usr/games/crawl-git-cd15a05269(_Z14get_cell_glyphRK9coord_defbi+0x359) [0x55c827fe41a9]: get_cell_glyph(coord_def const&, bool, int)
/usr/games/crawl-git-cd15a05269(_Z10screenshotB5cxx11v+0x178) [0x55c8280f1ad8]: screenshot[abi:cxx11]()
/usr/games/crawl-git-cd15a05269(_Z13do_crash_dumpv+0x2364) [0x55c827bc3e64]: do_crash_dump()
/usr/games/crawl-git-cd15a05269(_Z20crash_signal_handleri+0x7e) [0x55c827bba15e]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f63177a9060]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcf) [0x7f6317b25f9f]: 
/usr/games/crawl-git-cd15a05269(+0x34a736) [0x55c827bc1736]: 
/usr/games/crawl-git-cd15a05269(+0x34a8a2) [0x55c827bc18a2]: 
/usr/games/crawl-git-cd15a05269(_Z17artefact_propertyRK8item_def18artefact_prop_type+0x1a0) [0x55c827b54620]: artefact_property(item_def const&, artefact_prop_type)
/usr/games/crawl-git-cd15a05269(_Z14unmarshallItemR6readerR8item_def+0x1f2d) [0x55c8280869cd]: unmarshallItem(reader&, item_def&)
/usr/games/crawl-git-cd15a05269(_Z8tag_readR6reader8tag_type+0xea4) [0x55c828092df4]: tag_read(reader&, tag_type)
/usr/games/crawl-git-cd15a05269(+0x410d48) [0x55c827c87d48]: 
/usr/games/crawl-git-cd15a05269(_Z10load_level20dungeon_feature_type14load_mode_typeRK8level_id+0x495) [0x55c827c937e5]: load_level(dungeon_feature_type, load_mode_type, level_id const&)
/usr/games/crawl-git-cd15a05269(_Z12startup_stepv+0x17eb) [0x55c82805985b]: startup_step()
/usr/games/crawl-git-cd15a05269(+0x8f9a74) [0x55c828170a74]: 
/usr/games/crawl-git-cd15a05269(main+0x13b) [0x55c827b1bfeb]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f63177962e1]: 
/usr/games/crawl-git-cd15a05269(_start+0x2a) [0x55c827b1cb2a]: