Obtained 28 stack frames.
/usr/games/crawl-git-113dc556a4(_Z17write_stack_traceP8_IO_FILE+0x3b) [0x556408cfc5fb]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-113dc556a4(_Z20crash_signal_handleri+0x1e5) [0x556408cfcaa5]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f6ff3f00f20]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0xd) [0x7f6ff3f0114d]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xac) [0x7f6ff3f0276c]: 
/usr/games/crawl-git-113dc556a4(+0x39a3e0) [0x556408d043e0]: 
/usr/games/crawl-git-113dc556a4(+0x39a795) [0x556408d04795]: 
/usr/games/crawl-git-113dc556a4(+0x987533) [0x5564092f1533]: 
/usr/games/crawl-git-113dc556a4(_ZN14TilesFramework14send_milestoneERK11xlog_fields+0x128) [0x5564092f1d08]: TilesFramework::send_milestone(xlog_fields const&)
/usr/games/crawl-git-113dc556a4(_Z14mark_milestoneRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_l+0x4ea) [0x556408e5942a]: 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-113dc556a4(_Z13do_crash_dumpv+0x1ea1) [0x556408d06791]: do_crash_dump()
/usr/games/crawl-git-113dc556a4(_Z20crash_signal_handleri+0xae) [0x556408cfc96e]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f6ff3f00f20]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xc7) [0x7f6ff42c5727]: 
/usr/games/crawl-git-113dc556a4(+0x39a3db) [0x556408d043db]: 
/usr/games/crawl-git-113dc556a4(+0x39a795) [0x556408d04795]: 
/usr/games/crawl-git-113dc556a4(_Z13invis_allowedbPNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x556) [0x5564090ec1c6]: invis_allowed(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)
/usr/games/crawl-git-113dc556a4(+0x957153) [0x5564092c1153]: 
/usr/games/crawl-git-113dc556a4(_Z15xom_take_action14xom_event_typei+0x210) [0x5564092c17f0]: xom_take_action(xom_event_type, int)
/usr/games/crawl-git-113dc556a4(_Z8xom_actsi10maybe_boolib+0x4d) [0x5564092c9fbd]: xom_acts(int, maybe_bool, int, bool)
/usr/games/crawl-git-113dc556a4(_Z8xom_tickv+0x247) [0x5564092ca227]: xom_tick()
/usr/games/crawl-git-113dc556a4(_Z13player_reactsv+0x665) [0x5564090e3f85]: player_reacts()
/usr/games/crawl-git-113dc556a4(_Z12world_reactsv+0x595) [0x556409306bd5]: world_reacts()
/usr/games/crawl-git-113dc556a4(+0x99e968) [0x556409308968]: 
/usr/games/crawl-git-113dc556a4(+0x99ef6d) [0x556409308f6d]: 
/usr/games/crawl-git-113dc556a4(main+0x39b) [0x556408c5536b]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f6ff3ee3b97]: 
/usr/games/crawl-git-113dc556a4(_start+0x2a) [0x556408c55baa]: