Obtained 28 stack frames.
/usr/games/crawl-git-008097b4cb(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x56164af6d59f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x18f) [0x56164af6d9bf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f37cc518210]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x190f44) [0x7f37cc662f44]: 
/usr/games/crawl-git-008097b4cb(_ZNKSt8_Rb_treeINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESt4pairIKS5_15CrawlStoreValueESt10_Select1stIS9_ESt4lessIS5_ESaIS9_EE4findERS7_+0x68) [0x56164b553678]: 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) [0x56164b551281]: 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+0x59) [0x56164b19e529]: item_base_name[abi:cxx11](item_def const&)
/usr/games/crawl-git-008097b4cb(_ZNK8item_def8name_auxB5cxx11E22description_level_typebbb+0xb50) [0x56164b193560]: item_def::name_aux[abi:cxx11](description_level_type, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_ZNK8item_def4nameB5cxx11E22description_level_typebbbb+0x1f4) [0x56164b195bd4]: item_def::name[abi:cxx11](description_level_type, bool, bool, bool, bool) const
/usr/games/crawl-git-008097b4cb(_Z13do_crash_dumpv+0x152a) [0x56164af78b4a]: do_crash_dump()
/usr/games/crawl-git-008097b4cb(_Z20crash_signal_handleri+0x1fa) [0x56164af6da2a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f37cc518210]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb) [0x7f37cc51818b]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b) [0x7f37cc4f7859]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x903ee) [0x7f37cc5623ee]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x9847c) [0x7f37cc56a47c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x99cac) [0x7f37cc56bcac]: 
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework10_send_cellERK9coord_defRK13screen_cell_tS5_RK8map_cellS8_RSt3mapIjS0_St4lessIjESaISt4pairIKjS0_EEEb+0x123c) [0x56164b680e9c]: 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+0x6cf) [0x56164b6819bf]: TilesFramework::_send_map(bool)
/usr/games/crawl-git-008097b4cb(_ZN14TilesFramework6redrawEv+0x123) [0x56164b682ee3]: TilesFramework::redraw()
/usr/games/crawl-git-008097b4cb(_Z8getch_ckv+0x1d1) [0x56164b6874f1]: getch_ck()
/usr/games/crawl-git-008097b4cb(+0x778d06) [0x56164b22cd06]: 
/usr/games/crawl-git-008097b4cb(_Z25getch_with_command_macrosv+0x180) [0x56164b231900]: getch_with_command_macros()
/usr/games/crawl-git-008097b4cb(+0xbda644) [0x56164b68e644]: 
/usr/games/crawl-git-008097b4cb(+0xbdb0e5) [0x56164b68f0e5]: 
/usr/games/crawl-git-008097b4cb(main+0x1ab) [0x56164aeb48fb]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f37cc4f90b3]: 
/usr/games/crawl-git-008097b4cb(_start+0x2e) [0x56164aeb54ce]: