Obtained 19 stack frames.
/usr/games/crawl-0.27(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x564a78e8e44f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.27(_Z20crash_signal_handleri+0x18f) [0x564a78e8e86f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f4352713210]: 
/usr/games/crawl-0.27(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x6c) [0x564a78f09b8c]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-0.27(_Z13do_crash_dumpv+0x21a3) [0x564a78e97a53]: do_crash_dump()
/usr/games/crawl-0.27(_Z20crash_signal_handleri+0x1fa) [0x564a78e8e8da]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f4352713210]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcb) [0x7f43528d424b]: 
/usr/games/crawl-0.27(+0x41340d) [0x564a78e9540d]: 
/usr/games/crawl-0.27(+0x4135c5) [0x564a78e955c5]: 
/usr/games/crawl-0.27(_Z9save_gamebPKc+0x8f9) [0x564a78f6e109]: save_game(bool, char const*)
/usr/games/crawl-0.27(_Z21check_selected_skillsv+0x260) [0x564a7932be20]: check_selected_skills()
/usr/games/crawl-0.27(+0x4e8213) [0x564a78f6a213]: 
/usr/games/crawl-0.27(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x21) [0x564a78f6a9b1]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.27(_Z12startup_stepv+0x1499) [0x564a793939d9]: startup_step()
/usr/games/crawl-0.27(+0xa3c407) [0x564a794be407]: 
/usr/games/crawl-0.27(main+0x1a5) [0x564a78deaa05]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f43526f40b3]: 
/usr/games/crawl-0.27(_start+0x2e) [0x564a78deb51e]: