Obtained 31 stack frames.
/usr/games/crawl-git-8eb0198dcf(_Z17write_stack_traceP8_IO_FILE+0x28) [0x55a1cdaae888]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-8eb0198dcf(_Z20crash_signal_handleri+0x1bd) [0x55a1cdaaeccd]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f730b0d7060]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0x10) [0x7f730b0d72e0]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xe1) [0x7f730b0d83a1]: 
/usr/games/crawl-git-8eb0198dcf(+0x39331b) [0x55a1cdab631b]: 
/usr/games/crawl-git-8eb0198dcf(+0x3935ad) [0x55a1cdab65ad]: 
/usr/games/crawl-git-8eb0198dcf(+0x9604a0) [0x55a1ce0834a0]: 
/usr/games/crawl-git-8eb0198dcf(_ZN14TilesFramework14send_milestoneERK11xlog_fields+0x108) [0x55a1ce083bc8]: TilesFramework::send_milestone(xlog_fields const&)
/usr/games/crawl-git-8eb0198dcf(_Z14mark_milestoneRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_l+0x43d) [0x55a1cdc094ed]: 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-8eb0198dcf(_Z13do_crash_dumpv+0x2107) [0x55a1cdab87e7]: do_crash_dump()
/usr/games/crawl-git-8eb0198dcf(_Z20crash_signal_handleri+0x7e) [0x55a1cdaaeb8e]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f730b0d7060]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcf) [0x7f730b453f9f]: 
/usr/games/crawl-git-8eb0198dcf(+0x393316) [0x55a1cdab6316]: 
/usr/games/crawl-git-8eb0198dcf(+0x393482) [0x55a1cdab6482]: 
/usr/games/crawl-git-8eb0198dcf(_Z13add_companionP7monster+0x34f) [0x55a1cdbcfa3f]: add_companion(monster*)
/usr/games/crawl-git-8eb0198dcf(_Z17beogh_convert_orcP7monster6conv_t+0x173) [0x55a1cda59d53]: beogh_convert_orc(monster*, conv_t)
/usr/games/crawl-git-8eb0198dcf(+0x67b697) [0x55a1cdd9e697]: 
/usr/games/crawl-git-8eb0198dcf(_Z11monster_dieR7monster11killer_typeibbb+0x3ecf) [0x55a1cdda9cdf]: monster_die(monster&, killer_type, int, bool, bool, bool)
/usr/games/crawl-git-8eb0198dcf(_ZN6attack19handle_phase_killedEv+0x42) [0x55a1cda53842]: attack::handle_phase_killed()
/usr/games/crawl-git-8eb0198dcf(_ZN12melee_attack6attackEv+0x49f) [0x55a1cdd5702f]: melee_attack::attack()
/usr/games/crawl-git-8eb0198dcf(_Z11fight_meleeP5actorS0_Pbb+0x31c) [0x55a1cdb7e43c]: fight_melee(actor*, actor*, bool*, bool)
/usr/games/crawl-git-8eb0198dcf(_Z19handle_monster_moveP7monster+0x16b9) [0x55a1cdd78d69]: handle_monster_move(monster*)
/usr/games/crawl-git-8eb0198dcf(_Z15handle_monstersb+0x8fc) [0x55a1cdd7a2fc]: handle_monsters(bool)
/usr/games/crawl-git-8eb0198dcf(_Z12world_reactsv+0xe2) [0x55a1ce0988b2]: world_reacts()
/usr/games/crawl-git-8eb0198dcf(+0x977b4c) [0x55a1ce09ab4c]: 
/usr/games/crawl-git-8eb0198dcf(+0x978115) [0x55a1ce09b115]: 
/usr/games/crawl-git-8eb0198dcf(main+0x345) [0x55a1cda08f25]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f730b0c42e1]: 
/usr/games/crawl-git-8eb0198dcf(_start+0x2a) [0x55a1cda098ba]: