Obtained 28 stack frames.
/usr/games/crawl-git-008097b4cb(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x56ce92309dae]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x18f) [0x56ce9230a21f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45320) [0x74dac1cc5320]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x188599) [0x74dac1e08599]: 
/usr/games/crawl-git-008097b4cb(_ZNKSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_15CrawlStoreValueESt10_Select1stIS9_ESt4lessIS5_ESaIS9_EE4findERS7_+0x68) [0x56ce929383d8]: 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) [0x56ce929352a1]: 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) [0x56ce92546674]: item_base_name[abi:cxx11](item_def const&)
/usr/games/crawl-git-008097b4cb(_ZNK8item_def8name_auxB5cxx11E22description_level_typebbb+0x15e7) [0x56ce92539b67]: item_def::name_aux[abi:cxx11](description_level_type, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_ZNK8item_def4nameB5cxx11E22description_level_typebbbb+0x1b1) [0x56ce9253bc71]: item_def::name[abi:cxx11](description_level_type, bool, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_Z13do_crash_dumpv+0x1592) [0x56ce92318fa2]: do_crash_dump()
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x1fa) [0x56ce9230a28a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45320) [0x74dac1cc5320]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x74dac1d1eb1c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x74dac1cc526e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x74dac1ca88ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x74dac1ca97b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8fe5) [0x74dac1d28fe5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab37c) [0x74dac1d2b37c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x74dac1d2dd9e]: 
/usr/games/crawl-git-008097b4cb(_ZN12monster_infoD1Ev+0x8f) [0x56ce922ca47f]: monster_info::~monster_info()
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework10_send_cellERK9coord_defRK13screen_cell_tS5_RK8map_cellS8_RSt3mapIjS0_St4lessIjESaISt4pairIKjS0_EEEb+0xf33) [0x56ce92a79d23]: 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) [0x56ce92a7a4e6]: TilesFramework::_send_map(bool)
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework6redrawEv+0xf3) [0x56ce92a7b603]: TilesFramework::redraw()
/usr/games/crawl-git-008097b4cb(+0xc304e1) [0x56ce92a8e4e1]: 
/usr/games/crawl-git-008097b4cb(main+0x1f7) [0x56ce922436f7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x74dac1caa1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x74dac1caa28b]: 
/usr/games/crawl-git-008097b4cb(_start+0x25) [0x56ce92244115]: