Obtained 22 stack frames.
/usr/games/crawl-0.16(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5a2fd3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x1a5) [0x5a3375]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f0cc373c4c0]: 
/usr/games/crawl-0.16(_ZNKSt8_Rb_treeI20dungeon_feature_typeSt4pairIKS0_SsESt10_Select1stIS3_ESt4lessIS0_ESaIS3_EE4findERS2_+0x24) [0x612374]: 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-0.16(_Z23raw_feature_descriptionRK9coord_def+0x7c) [0x605a2c]: raw_feature_description(coord_def const&)
/usr/games/crawl-0.16(_Z13do_crash_dumpv+0xead) [0x5ab2ad]: do_crash_dump()
/usr/games/crawl-0.16(_Z20crash_signal_handleri+0x9c) [0x5a326c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f0cc373c4c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7f0cc37eb100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7f0cc377f313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7f0cc377f1da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7f0cc377fc8e]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x4d016) [0x7f0cc3753016]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x59e) [0x7f0cc374dc1e]: 
/lib/x86_64-linux-gnu/libc.so.6(__fprintf_chk+0xeb) [0x7f0cc380d8cb]: 
/usr/games/crawl-0.16(_Z3endibPKcz+0x237) [0x63eb77]: end(int, bool, char const*, ...)
/usr/games/crawl-0.16(_Z9save_gamebPKc+0x160) [0x65fb20]: save_game(bool, char const*)
/usr/games/crawl-0.16() [0x79d7c3]
/usr/games/crawl-0.16() [0x79e565]
/usr/games/crawl-0.16(main+0x303) [0x7a15f3]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f0cc372776d]: 
/usr/games/crawl-0.16() [0x507809]