Obtained 36 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5a6b3aa7a95e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5a6b3aa7adcf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x781053642910]: 
/usr/games/crawl-0.34(+0xce016b) [0x5a6b3b26616b]: 
/usr/games/crawl-0.34(lua_next+0x32) [0x5a6b3b258772]: 
/usr/games/crawl-0.34(+0xceae91) [0x5a6b3b270e91]: 
/usr/games/crawl-0.34(+0xcd5753) [0x5a6b3b25b753]: 
/usr/games/crawl-0.34(+0xcd59a2) [0x5a6b3b25b9a2]: 
/usr/games/crawl-0.34(+0xce42a4) [0x5a6b3b26a2a4]: 
/usr/games/crawl-0.34(+0xcd5a6d) [0x5a6b3b25ba6d]: 
/usr/games/crawl-0.34(+0xcd48b3) [0x5a6b3b25a8b3]: 
/usr/games/crawl-0.34(+0xcd5e94) [0x5a6b3b25be94]: 
/usr/games/crawl-0.34(lua_pcallk+0x95) [0x5a6b3b258145]: 
/usr/games/crawl-0.34(_ZN4CLua5pcallEii+0x60) [0x5a6b3aa5f880]: CLua::pcall(int, int)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0xb4) [0x5a6b3aa611a4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x5a6b3aa8a2f4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5a6b3aa7ae3a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x781053642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x78105369999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x781053642866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7810536268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x781053627750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7810536a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7810536a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7810536a87f3]: 
/usr/games/crawl-0.34(+0xce8431) [0x5a6b3b26e431]: 
/usr/games/crawl-0.34(+0xcd9a39) [0x5a6b3b25fa39]: 
/usr/games/crawl-0.34(+0xcd6db9) [0x5a6b3b25cdb9]: 
/usr/games/crawl-0.34(+0xcd9196) [0x5a6b3b25f196]: 
/usr/games/crawl-0.34(+0xcdee86) [0x5a6b3b264e86]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5a6b3aa61a8e]: CLua::close()
/usr/games/crawl-0.34(+0x2f4ecc) [0x5a6b3a87aecc]: 
/usr/games/crawl-0.34(+0x2f7e95) [0x5a6b3a87de95]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7810536280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x781053628189]: 
/usr/games/crawl-0.34(_start+0x25) [0x5a6b3a9ace35]: