Obtained 35 stack frames.
/usr/games/crawl-git-d1a1f204d8(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5752062b643e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-d1a1f204d8(_Z20crash_signal_handleri+0x18f) [0x5752062b68af]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7fafc78f3330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7fafc794cb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7fafc78f327e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7fafc78d68ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7fafc78d77b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7fafc7956ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xad13c) [0x7fafc795b13c]: 
/lib/x86_64-linux-gnu/libc.so.6(realloc+0x255) [0x7fafc795c2f5]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb86e4) [0x575206a866e4]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb3645) [0x575206a81645]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb44b2) [0x575206a824b2]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb46c4) [0x575206a826c4]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb3523) [0x575206a81523]: 
/usr/games/crawl-git-d1a1f204d8(+0xcb4b04) [0x575206a82b04]: 
/usr/games/crawl-git-d1a1f204d8(lua_pcallk+0x95) [0x575206a7edb5]: 
/usr/games/crawl-git-d1a1f204d8(_ZN4CLua5pcallEii+0x60) [0x57520629b4a0]: CLua::pcall(int, int)
/usr/games/crawl-git-d1a1f204d8(_ZN4CLua6callfnEPKcii+0xb4) [0x57520629cdc4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-d1a1f204d8(_Z13do_crash_dumpv+0x1a1a) [0x5752062c5c5a]: do_crash_dump()
/usr/games/crawl-git-d1a1f204d8(_Z20crash_signal_handleri+0x1fa) [0x5752062b691a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7fafc78f3330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7fafc794cb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7fafc78f327e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7fafc78d68ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7fafc78d77b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7fafc7956ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x7fafc795938c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7fafc795bdae]: 
/usr/games/crawl-git-d1a1f204d8(_ZN13message_store5clearEv+0x73) [0x5752066258c3]: message_store::clear()
/usr/games/crawl-git-d1a1f204d8(+0x2ef59e) [0x5752060bd59e]: 
/usr/games/crawl-git-d1a1f204d8(+0x2f22f1) [0x5752060c02f1]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7fafc78d81ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7fafc78d828b]: 
/usr/games/crawl-git-d1a1f204d8(_start+0x25) [0x5752061ea495]: