Obtained 36 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x56b68e2b595e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x56b68e2b5dcf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79a93cc42910]: 
/usr/games/crawl-0.34(+0xce016b) [0x56b68eaa116b]: 
/usr/games/crawl-0.34(lua_next+0x32) [0x56b68ea93772]: 
/usr/games/crawl-0.34(+0xceae91) [0x56b68eaabe91]: 
/usr/games/crawl-0.34(+0xcd5753) [0x56b68ea96753]: 
/usr/games/crawl-0.34(+0xcd59a2) [0x56b68ea969a2]: 
/usr/games/crawl-0.34(+0xce42a4) [0x56b68eaa52a4]: 
/usr/games/crawl-0.34(+0xcd5a6d) [0x56b68ea96a6d]: 
/usr/games/crawl-0.34(+0xcd48b3) [0x56b68ea958b3]: 
/usr/games/crawl-0.34(+0xcd5e94) [0x56b68ea96e94]: 
/usr/games/crawl-0.34(lua_pcallk+0x95) [0x56b68ea93145]: 
/usr/games/crawl-0.34(_ZN4CLua5pcallEii+0x60) [0x56b68e29a880]: CLua::pcall(int, int)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0xb4) [0x56b68e29c1a4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x56b68e2c52f4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x56b68e2b5e3a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79a93cc42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x79a93cc9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x79a93cc42866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x79a93cc268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x79a93cc27750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x79a93cca3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x79a93cca5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x79a93cca87f3]: 
/usr/games/crawl-0.34(+0xce8431) [0x56b68eaa9431]: 
/usr/games/crawl-0.34(+0xcd9a39) [0x56b68ea9aa39]: 
/usr/games/crawl-0.34(+0xcd6de1) [0x56b68ea97de1]: 
/usr/games/crawl-0.34(+0xcd9196) [0x56b68ea9a196]: 
/usr/games/crawl-0.34(+0xcdee86) [0x56b68ea9fe86]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x56b68e29ca8e]: CLua::close()
/usr/games/crawl-0.34(+0x2f4ecc) [0x56b68e0b5ecc]: 
/usr/games/crawl-0.34(+0x2f7e95) [0x56b68e0b8e95]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x79a93cc280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x79a93cc28189]: 
/usr/games/crawl-0.34(_start+0x25) [0x56b68e1e7e35]: