Obtained 26 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5f7a0fc4395e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5f7a0fc43dcf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7db9d0242910]: 
/usr/games/crawl-0.34(+0xce0638) [0x5f7a1042f638]: 
/usr/games/crawl-0.34(lua_getglobal+0x84) [0x5f7a104205a4]: 
/usr/games/crawl-0.34(_ZN4CLua10pushglobalERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x16d) [0x5f7a0fc27bfd]: CLua::pushglobal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0x80) [0x5f7a0fc2a170]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x5f7a0fc532f4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5f7a0fc43e3a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7db9d0242910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7db9d029999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7db9d0242866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7db9d02268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7db9d0227750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7db9d02a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5c5c) [0x7db9d02a5c5c]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7db9d02a87f3]: 
/usr/games/crawl-0.34(+0xce85c1) [0x5f7a104375c1]: 
/usr/games/crawl-0.34(+0xcd9bc9) [0x5f7a10428bc9]: 
/usr/games/crawl-0.34(+0xcdf03d) [0x5f7a1042e03d]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5f7a0fc2aa8e]: CLua::close()
/usr/games/crawl-0.34(+0x2f4f36) [0x5f7a0fa43f36]: 
/usr/games/crawl-0.34(+0x2f7eff) [0x5f7a0fa46eff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7db9d02280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7db9d0228189]: 
/usr/games/crawl-0.34(_start+0x25) [0x5f7a0fb75ea5]: