Obtained 21 stack frames.
/usr/games/crawl-git-fa20dd96a1(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x55c730a8ecdf]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-fa20dd96a1(_Z20crash_signal_handleri+0x18f) [0x55c730a8f0ff]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f5c112df210]: 
/usr/games/crawl-git-fa20dd96a1(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x6c) [0x55c730b0f6dc]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-git-fa20dd96a1(_Z13do_crash_dumpv+0x21a3) [0x55c730a98643]: do_crash_dump()
/usr/games/crawl-git-fa20dd96a1(_Z20crash_signal_handleri+0x1fa) [0x55c730a8f16a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f5c112df210]: 
/usr/games/crawl-git-fa20dd96a1(_Z7calc_hpbb+0x63) [0x55c730ec5073]: calc_hp(bool, bool)
/usr/games/crawl-git-fa20dd96a1(_Z24check_skill_level_change10skill_typeb+0x36b) [0x55c730f3febb]: check_skill_level_change(skill_type, bool)
/usr/games/crawl-git-fa20dd96a1(_Z12fixup_skillsv+0x8c) [0x55c730f4045c]: fixup_skills()
/usr/games/crawl-git-fa20dd96a1(_Z17change_species_to12species_type+0x35e) [0x55c730f4496e]: change_species_to(species_type)
/usr/games/crawl-git-fa20dd96a1(+0x982d59) [0x55c730fe6d59]: 
/usr/games/crawl-git-fa20dd96a1(_Z8tag_readR6reader8tag_type+0x442f) [0x55c730febecf]: tag_read(reader&, tag_type)
/usr/games/crawl-git-fa20dd96a1(+0x506e29) [0x55c730b6ae29]: 
/usr/games/crawl-git-fa20dd96a1(+0x50a43d) [0x55c730b6e43d]: 
/usr/games/crawl-git-fa20dd96a1(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x21) [0x55c730b6f121]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-fa20dd96a1(_Z12startup_stepv+0x1497) [0x55c730fa98a7]: startup_step()
/usr/games/crawl-git-fa20dd96a1(+0xa78777) [0x55c7310dc777]: 
/usr/games/crawl-git-fa20dd96a1(main+0x1a5) [0x55c7309e5a85]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f5c112c00b3]: 
/usr/games/crawl-git-fa20dd96a1(_start+0x2e) [0x55c7309e65ae]: