Obtained 36 stack frames.
/usr/games/crawl-git-6af55ba296(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x63f14affa45e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-6af55ba296(_Z20crash_signal_handleri+0x18f) [0x63f14affa8cf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x730d98870330]: 
/usr/games/crawl-git-6af55ba296(+0xcd78ab) [0x63f14b7e08ab]: 
/usr/games/crawl-git-6af55ba296(lua_next+0x32) [0x63f14b7d2e62]: 
/usr/games/crawl-git-6af55ba296(+0xce2471) [0x63f14b7eb471]: 
/usr/games/crawl-git-6af55ba296(+0xccce43) [0x63f14b7d5e43]: 
/usr/games/crawl-git-6af55ba296(+0xccd092) [0x63f14b7d6092]: 
/usr/games/crawl-git-6af55ba296(+0xcdb944) [0x63f14b7e4944]: 
/usr/games/crawl-git-6af55ba296(+0xccd15d) [0x63f14b7d615d]: 
/usr/games/crawl-git-6af55ba296(+0xccbfa3) [0x63f14b7d4fa3]: 
/usr/games/crawl-git-6af55ba296(+0xccd584) [0x63f14b7d6584]: 
/usr/games/crawl-git-6af55ba296(lua_pcallk+0x95) [0x63f14b7d2835]: 
/usr/games/crawl-git-6af55ba296(_ZN4CLua5pcallEii+0x60) [0x63f14afdf450]: CLua::pcall(int, int)
/usr/games/crawl-git-6af55ba296(_ZN4CLua6callfnEPKcii+0xb4) [0x63f14afe0d74]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-6af55ba296(_Z13do_crash_dumpv+0x1b84) [0x63f14b009de4]: do_crash_dump()
/usr/games/crawl-git-6af55ba296(_Z20crash_signal_handleri+0x1fa) [0x63f14affa93a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x730d98870330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x730d988c9b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x730d9887027e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x730d988538ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x730d988547b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x730d988d3ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x730d988d612c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x730d988d8dae]: 
/usr/games/crawl-git-6af55ba296(+0xcdfad1) [0x63f14b7e8ad1]: 
/usr/games/crawl-git-6af55ba296(+0xcd1129) [0x63f14b7da129]: 
/usr/games/crawl-git-6af55ba296(+0xcce471) [0x63f14b7d7471]: 
/usr/games/crawl-git-6af55ba296(+0xcd0886) [0x63f14b7d9886]: 
/usr/games/crawl-git-6af55ba296(+0xcd6596) [0x63f14b7df596]: 
/usr/games/crawl-git-6af55ba296(_ZN4CLua5closeEv+0xbe) [0x63f14afe165e]: CLua::close()
/usr/games/crawl-git-6af55ba296(+0x2f2cce) [0x63f14adfbcce]: 
/usr/games/crawl-git-6af55ba296(+0x2f5c9a) [0x63f14adfec9a]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x730d988551ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x730d9885528b]: 
/usr/games/crawl-git-6af55ba296(_start+0x25) [0x63f14af2d035]: