Obtained 25 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5949eb0e5a9e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5949eb0e5f0f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7653c5a42910]: 
/usr/games/crawl-0.34(lua_getglobal+0x25) [0x5949eb8c3f25]: 
/usr/games/crawl-0.34(_ZN4CLua10pushglobalERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x16d) [0x5949eb0c9d3d]: CLua::pushglobal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0x80) [0x5949eb0cc2b0]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b94) [0x5949eb0f5454]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5949eb0e5f7a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7653c5a42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7653c5a9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7653c5a42866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7653c5a268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7653c5a27750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7653c5aa3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5c5c) [0x7653c5aa5c5c]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7653c5aa87f3]: 
/usr/games/crawl-0.34(+0xce9fa1) [0x5949eb8dafa1]: 
/usr/games/crawl-0.34(+0xcdb5a9) [0x5949eb8cc5a9]: 
/usr/games/crawl-0.34(+0xce0a1d) [0x5949eb8d1a1d]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5949eb0ccbce]: CLua::close()
/usr/games/crawl-0.34(+0x2f5028) [0x5949eaee6028]: 
/usr/games/crawl-0.34(+0x2f7ff1) [0x5949eaee8ff1]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7653c5a280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7653c5a28189]: 
/usr/games/crawl-0.34(_start+0x25) [0x5949eb017f95]: