Obtained 22 stack frames.
/usr/games/crawl-git-d0808f307f(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x5a30b3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-d0808f307f(_Z20crash_signal_handleri+0x1a5) [0x5a3455]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fdc850ea4c0]: 
/usr/games/crawl-git-d0808f307f(_ZNKSt8_Rb_treeI20dungeon_feature_typeSt4pairIKS0_SsESt10_Select1stIS3_ESt4lessIS0_ESaIS3_EE4findERS2_+0x24) [0x612304]: 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-d0808f307f(_Z23raw_feature_descriptionRK9coord_def+0x7c) [0x6059bc]: raw_feature_description(coord_def const&)
/usr/games/crawl-git-d0808f307f(_Z13do_crash_dumpv+0xead) [0x5ab38d]: do_crash_dump()
/usr/games/crawl-git-d0808f307f(_Z20crash_signal_handleri+0x9c) [0x5a334c]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7fdc850ea4c0]: 
/lib/x86_64-linux-gnu/libc.so.6(__write+0x10) [0x7fdc85199100]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_write+0x43) [0x7fdc8512d313]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x791da) [0x7fdc8512d1da]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_xsputn+0x23e) [0x7fdc8512dc8e]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x4d016) [0x7fdc85101016]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0x59e) [0x7fdc850fbc1e]: 
/lib/x86_64-linux-gnu/libc.so.6(__fprintf_chk+0xeb) [0x7fdc851bb8cb]: 
/usr/games/crawl-git-d0808f307f(_Z3endibPKcz+0x237) [0x63eaf7]: end(int, bool, char const*, ...)
/usr/games/crawl-git-d0808f307f(_Z9save_gamebPKc+0x160) [0x65faa0]: save_game(bool, char const*)
/usr/games/crawl-git-d0808f307f() [0x79d863]
/usr/games/crawl-git-d0808f307f() [0x79e605]
/usr/games/crawl-git-d0808f307f(main+0x303) [0x7a1603]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fdc850d576d]: 
/usr/games/crawl-git-d0808f307f() [0x5078d9]