Obtained 37 stack frames.
/usr/games/crawl-git-17a993e2a6(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5756f38de39e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-17a993e2a6(_Z20crash_signal_handleri+0x18f) [0x5756f38de80f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x79d19291b330]: 
/usr/games/crawl-git-17a993e2a6(+0xcd7488) [0x5756f40c4488]: 
/usr/games/crawl-git-17a993e2a6(+0xcd766b) [0x5756f40c466b]: 
/usr/games/crawl-git-17a993e2a6(lua_rawget+0x1d) [0x5756f40b5ccd]: 
/usr/games/crawl-git-17a993e2a6(+0xcdfbeb) [0x5756f40ccbeb]: 
/usr/games/crawl-git-17a993e2a6(+0xce2927) [0x5756f40cf927]: 
/usr/games/crawl-git-17a993e2a6(+0xcccd83) [0x5756f40b9d83]: 
/usr/games/crawl-git-17a993e2a6(+0xcdbfa5) [0x5756f40c8fa5]: 
/usr/games/crawl-git-17a993e2a6(+0xccd09d) [0x5756f40ba09d]: 
/usr/games/crawl-git-17a993e2a6(+0xccbee3) [0x5756f40b8ee3]: 
/usr/games/crawl-git-17a993e2a6(+0xccd4c4) [0x5756f40ba4c4]: 
/usr/games/crawl-git-17a993e2a6(lua_pcallk+0x95) [0x5756f40b6775]: 
/usr/games/crawl-git-17a993e2a6(_ZN4CLua5pcallEii+0x60) [0x5756f38c3390]: CLua::pcall(int, int)
/usr/games/crawl-git-17a993e2a6(_ZN4CLua6callfnEPKcii+0xb4) [0x5756f38c4cb4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-17a993e2a6(_Z13do_crash_dumpv+0x1b84) [0x5756f38edd24]: do_crash_dump()
/usr/games/crawl-git-17a993e2a6(_Z20crash_signal_handleri+0x1fa) [0x5756f38de87a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x79d19291b330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x79d192974b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x79d19291b27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x79d1928fe8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x79d1928ff7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x79d19297eff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x79d19298112c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x79d192983dae]: 
/usr/games/crawl-git-17a993e2a6(+0xcdfa11) [0x5756f40cca11]: 
/usr/games/crawl-git-17a993e2a6(+0xcd1069) [0x5756f40be069]: 
/usr/games/crawl-git-17a993e2a6(+0xcce3d9) [0x5756f40bb3d9]: 
/usr/games/crawl-git-17a993e2a6(+0xcd07c6) [0x5756f40bd7c6]: 
/usr/games/crawl-git-17a993e2a6(+0xcd64d6) [0x5756f40c34d6]: 
/usr/games/crawl-git-17a993e2a6(_ZN4CLua5closeEv+0xbe) [0x5756f38c559e]: CLua::close()
/usr/games/crawl-git-17a993e2a6(+0x2f2c74) [0x5756f36dfc74]: 
/usr/games/crawl-git-17a993e2a6(+0x2f5c40) [0x5756f36e2c40]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x79d1929001ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x79d19290028b]: 
/usr/games/crawl-git-17a993e2a6(_start+0x25) [0x5756f3810f45]: