Obtained 25 stack frames.
/usr/games/crawl-git-d248d352fb(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x6057d476788e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-d248d352fb(_Z20crash_signal_handleri+0x18f) [0x6057d4767cff]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c352ef91330]: 
/usr/games/crawl-git-d248d352fb(+0xcd5caf) [0x6057d4f4acaf]: 
/usr/games/crawl-git-d248d352fb(lua_gettable+0x5c) [0x6057d4f3c0ec]: 
/usr/games/crawl-git-d248d352fb(_ZNK14map_lua_marker15debug_to_stringB5cxx11Ev+0x57) [0x6057d4a95407]: map_lua_marker::debug_to_string[abi:cxx11]() const
/usr/games/crawl-git-d248d352fb(_Z13do_crash_dumpv+0x1d84) [0x6057d4777414]: do_crash_dump()
/usr/games/crawl-git-d248d352fb(_Z20crash_signal_handleri+0x1fa) [0x6057d4767d6a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c352ef91330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7c352efeab2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7c352ef9127e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7c352ef748ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7c352ef757b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7c352eff4ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x7c352eff712c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7c352eff9dae]: 
/usr/games/crawl-git-d248d352fb(+0xcde021) [0x6057d4f53021]: 
/usr/games/crawl-git-d248d352fb(+0xccf679) [0x6057d4f44679]: 
/usr/games/crawl-git-d248d352fb(+0xcd4b0d) [0x6057d4f49b0d]: 
/usr/games/crawl-git-d248d352fb(_ZN4CLua5closeEv+0xbe) [0x6057d474ea8e]: CLua::close()
/usr/games/crawl-git-d248d352fb(+0x2f33a0) [0x6057d45683a0]: 
/usr/games/crawl-git-d248d352fb(+0x2f636c) [0x6057d456b36c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7c352ef761ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7c352ef7628b]: 
/usr/games/crawl-git-d248d352fb(_start+0x25) [0x6057d4699605]: