Obtained 28 stack frames.
/usr/games/crawl-git-008097b4cb(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x576d487d266e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x18f) [0x576d487d2adf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7009f1642910]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x17d119) [0x7009f177d119]: 
/usr/games/crawl-git-008097b4cb(_ZNKSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_15CrawlStoreValueESt10_Select1stIS9_ESt4lessIS5_ESaIS9_EE4findERS7_+0x68) [0x576d48e00e48]: std::_Rb_tree<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, CrawlStoreValue>, std::_Select1st<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, CrawlStoreValue> >, std::less<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, CrawlStoreValue> > >::find(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const
/usr/games/crawl-git-008097b4cb(_ZNK14CrawlHashTable6existsERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x11) [0x576d48dfdd11]: CrawlHashTable::exists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const
/usr/games/crawl-git-008097b4cb(_Z14item_base_nameB5cxx11RK8item_def+0x64) [0x576d48a0eb84]: item_base_name[abi:cxx11](item_def const&)
/usr/games/crawl-git-008097b4cb(_ZNK8item_def8name_auxB5cxx11E22description_level_typebbb+0xbeb) [0x576d48a016db]: item_def::name_aux[abi:cxx11](description_level_type, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_ZNK8item_def4nameB5cxx11E22description_level_typebbbb+0x1b1) [0x576d48a041e1]: item_def::name[abi:cxx11](description_level_type, bool, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_Z13do_crash_dumpv+0x1592) [0x576d487e1872]: do_crash_dump()
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x1fa) [0x576d487d2b4a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7009f1642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7009f169999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7009f1642866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7009f16268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7009f1627750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7009f16a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7009f16a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7009f16a87f3]: 
/usr/games/crawl-git-008097b4cb(_ZN12monster_infoD1Ev+0x8f) [0x576d48792cdf]: monster_info::~monster_info()
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework10_send_cellERK9coord_defRK13screen_cell_tS5_RK8map_cellS8_RSt3mapIjS0_St4lessIjESaISt4pairIKjS0_EEEb+0xf33) [0x576d48f428a3]: TilesFramework::_send_cell(coord_def const&, screen_cell_t const&, screen_cell_t const&, map_cell const&, map_cell const&, std::map<unsigned int, coord_def, std::less<unsigned int>, std::allocator<std::pair<unsigned int const, coord_def> > >&, bool)
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework9_send_mapEb+0x486) [0x576d48f43066]: TilesFramework::_send_map(bool)
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework6redrawEv+0xf3) [0x576d48f44183]: TilesFramework::redraw()
/usr/games/crawl-git-008097b4cb(+0xc30071) [0x576d48f57071]: 
/usr/games/crawl-git-008097b4cb(main+0x1f7) [0x576d4870bf27]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7009f16280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7009f1628189]: 
/usr/games/crawl-git-008097b4cb(_start+0x25) [0x576d4870c945]: