Obtained 24 stack frames.
/usr/games/crawl-git-27aa881441(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x5631cf0936ef]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-27aa881441(_Z20crash_signal_handleri+0x18f) [0x5631cf093b0f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7fb346b15210]: 
/lib/x86_64-linux-gnu/libc.so.6(sigprocmask+0x4b) [0x7fb346b1548b]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xb4) [0x7fb346af47e2]: 
/usr/games/crawl-git-27aa881441(+0x421732) [0x5631cf09a732]: 
/usr/games/crawl-git-27aa881441(+0x421a56) [0x5631cf09aa56]: 
/usr/games/crawl-git-27aa881441(+0xa3d3f2) [0x5631cf6b63f2]: 
/usr/games/crawl-git-27aa881441(_ZN14TilesFramework14send_milestoneERK11xlog_fields+0x128) [0x5631cf6b8a28]: TilesFramework::send_milestone(xlog_fields const&)
/usr/games/crawl-git-27aa881441(_Z14mark_milestoneRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES6_S6_l+0x4c2) [0x5631cf2017d2]: 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-27aa881441(_Z13do_crash_dumpv+0x245e) [0x5631cf09d02e]: do_crash_dump()
/usr/games/crawl-git-27aa881441(_Z20crash_signal_handleri+0x1fa) [0x5631cf093b7a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7fb346b15210]: 
/usr/games/crawl-git-27aa881441(_Z26connected_branch_can_exist11branch_type+0x14c) [0x5631cf0fcd8c]: connected_branch_can_exist(branch_type)
/usr/games/crawl-git-27aa881441(_Z27overview_description_stringB5cxx11b+0xe7) [0x5631cf0fd657]: overview_description_string[abi:cxx11](bool)
/usr/games/crawl-git-27aa881441(+0x3e7563) [0x5631cf060563]: 
/usr/games/crawl-git-27aa881441(+0x3e8203) [0x5631cf061203]: 
/usr/games/crawl-git-27aa881441(_Z9dump_charRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEbbPK15scorefile_entry+0x4a) [0x5631cf065b0a]: dump_char(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool, bool, scorefile_entry const*)
/usr/games/crawl-git-27aa881441(_Z9save_gamebPKc+0x7dd) [0x5631cf1760cd]: save_game(bool, char const*)
/usr/games/crawl-git-27aa881441(+0xa57edb) [0x5631cf6d0edb]: 
/usr/games/crawl-git-27aa881441(+0xa58a5d) [0x5631cf6d1a5d]: 
/usr/games/crawl-git-27aa881441(main+0x1a5) [0x5631cefec7f5]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7fb346af60b3]: 
/usr/games/crawl-git-27aa881441(_start+0x2e) [0x5631cefed30e]: