Obtained 36 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x600c6d3d0b1e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x600c6d3d0f8f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7c84e9642910]: 
/usr/games/crawl-0.34(+0xce264b) [0x600c6dbbe64b]: 
/usr/games/crawl-0.34(lua_next+0x32) [0x600c6dbb0c52]: 
/usr/games/crawl-0.34(+0xced371) [0x600c6dbc9371]: 
/usr/games/crawl-0.34(+0xcd7c33) [0x600c6dbb3c33]: 
/usr/games/crawl-0.34(+0xcd7e82) [0x600c6dbb3e82]: 
/usr/games/crawl-0.34(+0xce6784) [0x600c6dbc2784]: 
/usr/games/crawl-0.34(+0xcd7f4d) [0x600c6dbb3f4d]: 
/usr/games/crawl-0.34(+0xcd6d93) [0x600c6dbb2d93]: 
/usr/games/crawl-0.34(+0xcd8374) [0x600c6dbb4374]: 
/usr/games/crawl-0.34(lua_pcallk+0x95) [0x600c6dbb0625]: 
/usr/games/crawl-0.34(_ZN4CLua5pcallEii+0x60) [0x600c6d3b5a40]: CLua::pcall(int, int)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0xb4) [0x600c6d3b7364]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x600c6d3e04d4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x600c6d3d0ffa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7c84e9642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7c84e969999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7c84e9642866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7c84e96268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7c84e9627750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7c84e96a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5c5c) [0x7c84e96a5c5c]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7c84e96a87f3]: 
/usr/games/crawl-0.34(+0xcea911) [0x600c6dbc6911]: 
/usr/games/crawl-0.34(+0xcdbf19) [0x600c6dbb7f19]: 
/usr/games/crawl-0.34(+0xcd9261) [0x600c6dbb5261]: 
/usr/games/crawl-0.34(+0xcdb676) [0x600c6dbb7676]: 
/usr/games/crawl-0.34(+0xce1366) [0x600c6dbbd366]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x600c6d3b7c4e]: CLua::close()
/usr/games/crawl-0.34(+0x2f50ac) [0x600c6d1d10ac]: 
/usr/games/crawl-0.34(+0x2f8075) [0x600c6d1d4075]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7c84e96280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7c84e9628189]: 
/usr/games/crawl-0.34(_start+0x25) [0x600c6d303015]: