Obtained 25 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x635742ac8b1e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x635742ac8f8f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79b159c42910]: 
/usr/games/crawl-0.34(+0xce24ff) [0x6357432b64ff]: 
/usr/games/crawl-0.34(lua_gettable+0x5c) [0x6357432a798c]: 
/usr/games/crawl-0.34(_ZNK14map_lua_marker15debug_to_stringB5cxx11Ev+0x57) [0x635742df82e7]: map_lua_marker::debug_to_string[abi:cxx11]() const
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1d94) [0x635742ad86d4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x635742ac8ffa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79b159c42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x79b159c9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x79b159c42866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x79b159c268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x79b159c27750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x79b159ca3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5c5c) [0x79b159ca5c5c]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x79b159ca87f3]: 
/usr/games/crawl-0.34(+0xcea911) [0x6357432be911]: 
/usr/games/crawl-0.34(+0xcdbf19) [0x6357432aff19]: 
/usr/games/crawl-0.34(+0xce138d) [0x6357432b538d]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x635742aafc4e]: CLua::close()
/usr/games/crawl-0.34(+0x2f50ac) [0x6357428c90ac]: 
/usr/games/crawl-0.34(+0x2f8075) [0x6357428cc075]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x79b159c280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x79b159c28189]: 
/usr/games/crawl-0.34(_start+0x25) [0x6357429fb015]: