Obtained 25 stack frames.
/usr/games/crawl-git-7991ae8747(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x64ddfa3fc77e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-7991ae8747(_Z20crash_signal_handleri+0x18f) [0x64ddfa3fcbef]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x77119dbeb330]: 
/usr/games/crawl-git-7991ae8747(+0xcd572f) [0x64ddfabdf72f]: 
/usr/games/crawl-git-7991ae8747(lua_gettable+0x5c) [0x64ddfabd0b6c]: 
/usr/games/crawl-git-7991ae8747(_ZNK14map_lua_marker15debug_to_stringB5cxx11Ev+0x57) [0x64ddfa729cc7]: map_lua_marker::debug_to_string[abi:cxx11]() const
/usr/games/crawl-git-7991ae8747(_Z13do_crash_dumpv+0x1d84) [0x64ddfa40c304]: do_crash_dump()
/usr/games/crawl-git-7991ae8747(_Z20crash_signal_handleri+0x1fa) [0x64ddfa3fcc5a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x77119dbeb330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x77119dc44b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x77119dbeb27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x77119dbce8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x77119dbcf7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x77119dc4eff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x77119dc5112c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x77119dc53dae]: 
/usr/games/crawl-git-7991ae8747(+0xcddaa1) [0x64ddfabe7aa1]: 
/usr/games/crawl-git-7991ae8747(+0xccf0f9) [0x64ddfabd90f9]: 
/usr/games/crawl-git-7991ae8747(+0xcd458d) [0x64ddfabde58d]: 
/usr/games/crawl-git-7991ae8747(_ZN4CLua5closeEv+0xbe) [0x64ddfa3e397e]: CLua::close()
/usr/games/crawl-git-7991ae8747(+0x2f328c) [0x64ddfa1fd28c]: 
/usr/games/crawl-git-7991ae8747(+0x2f6258) [0x64ddfa200258]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x77119dbd01ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x77119dbd028b]: 
/usr/games/crawl-git-7991ae8747(_start+0x25) [0x64ddfa32e4f5]: