Obtained 36 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5b4d21487b1e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5b4d21487f8f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7b9009a42910]: 
/usr/games/crawl-0.34(+0xce264b) [0x5b4d21c7564b]: 
/usr/games/crawl-0.34(lua_next+0x32) [0x5b4d21c67c52]: 
/usr/games/crawl-0.34(+0xced371) [0x5b4d21c80371]: 
/usr/games/crawl-0.34(+0xcd7c33) [0x5b4d21c6ac33]: 
/usr/games/crawl-0.34(+0xcd7e82) [0x5b4d21c6ae82]: 
/usr/games/crawl-0.34(+0xce6784) [0x5b4d21c79784]: 
/usr/games/crawl-0.34(+0xcd7f4d) [0x5b4d21c6af4d]: 
/usr/games/crawl-0.34(+0xcd6d93) [0x5b4d21c69d93]: 
/usr/games/crawl-0.34(+0xcd8374) [0x5b4d21c6b374]: 
/usr/games/crawl-0.34(lua_pcallk+0x95) [0x5b4d21c67625]: 
/usr/games/crawl-0.34(_ZN4CLua5pcallEii+0x60) [0x5b4d2146ca40]: CLua::pcall(int, int)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0xb4) [0x5b4d2146e364]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x5b4d214974d4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5b4d21487ffa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7b9009a42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7b9009a9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7b9009a42866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7b9009a268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7b9009a27750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7b9009aa3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7b9009aa5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7b9009aa87f3]: 
/usr/games/crawl-0.34(+0xcea911) [0x5b4d21c7d911]: 
/usr/games/crawl-0.34(+0xcdbf19) [0x5b4d21c6ef19]: 
/usr/games/crawl-0.34(+0xce27cf) [0x5b4d21c757cf]: 
/usr/games/crawl-0.34(+0xcdb676) [0x5b4d21c6e676]: 
/usr/games/crawl-0.34(+0xce1366) [0x5b4d21c74366]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5b4d2146ec4e]: CLua::close()
/usr/games/crawl-0.34(+0x2f50ac) [0x5b4d212880ac]: 
/usr/games/crawl-0.34(+0x2f8075) [0x5b4d2128b075]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7b9009a280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7b9009a28189]: 
/usr/games/crawl-0.34(_start+0x25) [0x5b4d213ba015]: