Obtained 25 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x64f8ffb7ea9e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x64f8ffb7ef0f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x72dd651a9330]: 
/usr/games/crawl-0.34(+0xcdfdff) [0x64f900369dff]: 
/usr/games/crawl-0.34(lua_gettable+0x5c) [0x64f90035b23c]: 
/usr/games/crawl-0.34(_ZNK14map_lua_marker15debug_to_stringB5cxx11Ev+0x57) [0x64f8ffeacae7]: map_lua_marker::debug_to_string[abi:cxx11]() const
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1d84) [0x64f8ffb8e624]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x64f8ffb7ef7a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x72dd651a9330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x72dd65202b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x72dd651a927e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x72dd6518c8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x72dd6518d7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x72dd6520cff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x72dd6520f12c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x72dd65211dae]: 
/usr/games/crawl-0.34(+0xce8171) [0x64f900372171]: 
/usr/games/crawl-0.34(+0xcd97c9) [0x64f9003637c9]: 
/usr/games/crawl-0.34(+0xcdec5d) [0x64f900368c5d]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x64f8ffb65c9e]: CLua::close()
/usr/games/crawl-0.34(+0x2f51f8) [0x64f8ff97f1f8]: 
/usr/games/crawl-0.34(+0x2f81c4) [0x64f8ff9821c4]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x72dd6518e1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x72dd6518e28b]: 
/usr/games/crawl-0.34(_start+0x25) [0x64f8ffab1145]: