Obtained 19 stack frames.
/usr/games/crawl-git-89529d69ea(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5f27b3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-89529d69ea(_Z20crash_signal_handleri+0x174) [0x5f2b24]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f188c7c24f0]: 
/usr/games/crawl-git-89529d69ea(_ZNKSt8_Rb_treeI20dungeon_feature_typeSt4pairIKS0_SsESt10_Select1stIS3_ESt4lessIS0_ESaIS3_EE4findERS2_+0x24) [0x6523c4]: std::_Rb_tree<dungeon_feature_type, std::pair<dungeon_feature_type const, std::string>, std::_Select1st<std::pair<dungeon_feature_type const, std::string> >, std::less<dungeon_feature_type>, std::allocator<std::pair<dungeon_feature_type const, std::string> > >::find(dungeon_feature_type const&) const
/usr/games/crawl-git-89529d69ea(_Z23raw_feature_descriptionRK9coord_def+0x7c) [0x64b15c]: raw_feature_description(coord_def const&)
/usr/games/crawl-git-89529d69ea(_Z13do_crash_dumpv+0xb31) [0x5f96f1]: do_crash_dump()
/usr/games/crawl-git-89529d69ea(_Z20crash_signal_handleri+0x74) [0x5f2a24]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x324f0) [0x7f188c7c24f0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f188c85eaf0]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f188c802e53]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x72aca) [0x7f188c802aca]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x1fe) [0x7f188c802dbe]: 
/lib/x86_64-linux-gnu/libc.so.6(fputs+0x9c) [0x7f188c7f8a0c]: 
/usr/games/crawl-git-89529d69ea(_Z3endibPKcz+0x20b) [0x9c98cb]: end(int, bool, char const*, ...)
/usr/games/crawl-git-89529d69ea(_Z9save_gamebPKc+0x121) [0x69d3f1]: save_game(bool, char const*)
/usr/games/crawl-git-89529d69ea() [0x7ab40f]
/usr/games/crawl-git-89529d69ea(main+0x575) [0x4fa795]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f188c7aeead]: 
/usr/games/crawl-git-89529d69ea() [0x56ce59]