Obtained 25 stack frames.
/usr/games/crawl-git-332d4de64d(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5b70427fd2ee]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-332d4de64d(_Z20crash_signal_handleri+0x18f) [0x5b70427fd75f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7ba0a1a4a330]: 
/usr/games/crawl-git-332d4de64d(+0xcd755f) [0x5b7042fe355f]: 
/usr/games/crawl-git-332d4de64d(lua_gettable+0x5c) [0x5b7042fd499c]: 
/usr/games/crawl-git-332d4de64d(_ZNK14map_lua_marker15debug_to_stringB5cxx11Ev+0x57) [0x5b7042b2acb7]: map_lua_marker::debug_to_string[abi:cxx11]() const
/usr/games/crawl-git-332d4de64d(_Z13do_crash_dumpv+0x1d84) [0x5b704280ce74]: do_crash_dump()
/usr/games/crawl-git-332d4de64d(_Z20crash_signal_handleri+0x1fa) [0x5b70427fd7ca]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7ba0a1a4a330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7ba0a1aa3b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7ba0a1a4a27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7ba0a1a2d8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7ba0a1a2e7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7ba0a1aadff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x7ba0a1ab012c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7ba0a1ab2dae]: 
/usr/games/crawl-git-332d4de64d(+0xcdf8d1) [0x5b7042feb8d1]: 
/usr/games/crawl-git-332d4de64d(+0xcd0f29) [0x5b7042fdcf29]: 
/usr/games/crawl-git-332d4de64d(+0xcd63bd) [0x5b7042fe23bd]: 
/usr/games/crawl-git-332d4de64d(_ZN4CLua5closeEv+0xbe) [0x5b70427e44ee]: CLua::close()
/usr/games/crawl-git-332d4de64d(+0x2f2b44) [0x5b70425feb44]: 
/usr/games/crawl-git-332d4de64d(+0x2f5b10) [0x5b7042601b10]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7ba0a1a2f1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7ba0a1a2f28b]: 
/usr/games/crawl-git-332d4de64d(_start+0x25) [0x5b704272feb5]: