Obtained 24 stack frames.
/usr/games/crawl-git-d5e1996cdb(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x55c16cc2462f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-d5e1996cdb(_Z20crash_signal_handleri+0x18f) [0x55c16cc24a4f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f354fac2210]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0x4b) [0x7f354fac248b]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xb4) [0x7f354faa17e2]: 
/usr/games/crawl-git-d5e1996cdb(+0x41d6a2) [0x55c16cc2b6a2]: 
/usr/games/crawl-git-d5e1996cdb(+0x41d9c6) [0x55c16cc2b9c6]: 
/usr/games/crawl-git-d5e1996cdb(+0xa2d982) [0x55c16d23b982]: 
/usr/games/crawl-git-d5e1996cdb(_ZN14TilesFramework14send_milestoneERK11xlog_fields+0x128) [0x55c16d23df78]: TilesFramework::send_milestone(xlog_fields const&)
/usr/games/crawl-git-d5e1996cdb(_Z14mark_milestoneRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_l+0x4c2) [0x55c16cd8ee22]: mark_milestone(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, long)
/usr/games/crawl-git-d5e1996cdb(_Z13do_crash_dumpv+0x245e) [0x55c16cc2df9e]: do_crash_dump()
/usr/games/crawl-git-d5e1996cdb(_Z20crash_signal_handleri+0x1fa) [0x55c16cc24aba]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f354fac2210]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_close+0x4) [0x7f354fb0d6a4]: 
/lib/x86_64-linux-gnu/libc.so.6(_IO_file_close_it+0x70) [0x7f354fb0efe0]: 
/lib/x86_64-linux-gnu/libc.so.6(fclose+0x166) [0x7f354fb010b6]: 
/usr/games/crawl-git-d5e1996cdb(_Z14whereis_recordRK11xlog_fields+0x243) [0x55c16cbf6f13]: whereis_record(xlog_fields const&)
/usr/games/crawl-git-d5e1996cdb(_Z14update_whereisPKc+0x41) [0x55c16cd8faf1]: update_whereis(char const*)
/usr/games/crawl-git-d5e1996cdb(_Z9save_gamebPKc+0x606) [0x55c16cd03996]: save_game(bool, char const*)
/usr/games/crawl-git-d5e1996cdb(+0xa479d1) [0x55c16d2559d1]: 
/usr/games/crawl-git-d5e1996cdb(+0xa482ed) [0x55c16d2562ed]: 
/usr/games/crawl-git-d5e1996cdb(main+0x1a5) [0x55c16cb7f355]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f354faa30b3]: 
/usr/games/crawl-git-d5e1996cdb(_start+0x2e) [0x55c16cb7fe6e]: