Obtained 20 stack frames.
/usr/games/crawl-git-178e55541d(_Z17write_stack_traceP8_IO_FILEi+0x28) [0x5643f9ca43b8]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-178e55541d(_Z20crash_signal_handleri+0x1bf) [0x5643f9ca47ff]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33030) [0x7f4de299f030]: 
/usr/games/crawl-git-178e55541d(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x4f) [0x5643f9d160bf]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-git-178e55541d(_Z13do_crash_dumpv+0xf77) [0x5643f9cad0f7]: do_crash_dump()
/usr/games/crawl-git-178e55541d(_Z20crash_signal_handleri+0x7e) [0x5643f9ca46be]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33030) [0x7f4de299f030]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcf) [0x7f4de2d1bf9f]: 
/usr/games/crawl-git-178e55541d(+0x31bdb6) [0x5643f9cabdb6]: 
/usr/games/crawl-git-178e55541d(+0x31c04d) [0x5643f9cac04d]: 
/usr/games/crawl-git-178e55541d(+0x52989c) [0x5643f9eb989c]: 
/usr/games/crawl-git-178e55541d(_ZN14message_window4showEv+0x114) [0x5643f9f3f204]: message_window::show()
/usr/games/crawl-git-178e55541d(_Z13load_messagesR6reader+0x840) [0x5643f9f39610]: load_messages(reader&)
/usr/games/crawl-git-178e55541d(+0x3dc842) [0x5643f9d6c842]: 
/usr/games/crawl-git-178e55541d(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x10) [0x5643f9d6cf50]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-178e55541d(_Z12startup_stepv+0x1bf8) [0x5643fa11a748]: startup_step()
/usr/games/crawl-git-178e55541d(+0x89d454) [0x5643fa22d454]: 
/usr/games/crawl-git-178e55541d(main+0x136) [0x5643f9c0bd36]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f4de298c2b1]: 
/usr/games/crawl-git-178e55541d(_start+0x2a) [0x5643f9c0c44a]: