Obtained 23 stack frames.
/usr/games/crawl-git-f3fc490d9d(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x5625b46978af]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-f3fc490d9d(_Z20crash_signal_handleri+0x18f) [0x5625b4697ccf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7fc02d595210]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0x4b) [0x7fc02d59548b]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xb4) [0x7fc02d5747e2]: 
/usr/games/crawl-git-f3fc490d9d(+0x41f8f2) [0x5625b469e8f2]: 
/usr/games/crawl-git-f3fc490d9d(+0x41fc16) [0x5625b469ec16]: 
/usr/games/crawl-git-f3fc490d9d(+0xa354d2) [0x5625b4cb44d2]: 
/usr/games/crawl-git-f3fc490d9d(_ZN14TilesFramework14send_milestoneERK11xlog_fields+0x128) [0x5625b4cb6b08]: TilesFramework::send_milestone(xlog_fields const&)
/usr/games/crawl-git-f3fc490d9d(_Z14mark_milestoneRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_l+0x4c2) [0x5625b4802092]: 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-f3fc490d9d(_Z13do_crash_dumpv+0x245e) [0x5625b46a11ee]: do_crash_dump()
/usr/games/crawl-git-f3fc490d9d(_Z20crash_signal_handleri+0x1fa) [0x5625b4697d3a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7fc02d595210]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcb) [0x7fc02d75624b]: 
/usr/games/crawl-git-f3fc490d9d(+0x41f8ed) [0x5625b469e8ed]: 
/usr/games/crawl-git-f3fc490d9d(_Z12AssertFailedPKcS0_iS0_z+0x18e) [0x5625b469ea8e]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-f3fc490d9d(_ZN12BaseRunDelay6handleEv+0x18b) [0x5625b46b98bb]: BaseRunDelay::handle()
/usr/games/crawl-git-f3fc490d9d(_Z12handle_delayv+0x39) [0x5625b46b8569]: handle_delay()
/usr/games/crawl-git-f3fc490d9d(+0xa4ff40) [0x5625b4ccef40]: 
/usr/games/crawl-git-f3fc490d9d(+0xa5077d) [0x5625b4ccf77d]: 
/usr/games/crawl-git-f3fc490d9d(main+0x1a5) [0x5625b45f1425]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7fc02d5760b3]: 
/usr/games/crawl-git-f3fc490d9d(_start+0x2e) [0x5625b45f1f3e]: