Obtained 40 stack frames.
/usr/games/crawl-git-43051b6e75(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x606c3e77539e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-43051b6e75(_Z20crash_signal_handleri+0x18f) [0x606c3e77580f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7ba76c91a330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7ba76c973b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7ba76c91a27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7ba76c8fd8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7ba76c8fe7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7ba76c97dff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xad13c) [0x7ba76c98213c]: 
/lib/x86_64-linux-gnu/libc.so.6(realloc+0x255) [0x7ba76c9832f5]: 
/usr/games/crawl-git-43051b6e75(+0xcd1084) [0x606c3ef55084]: 
/usr/games/crawl-git-43051b6e75(+0xccbfe5) [0x606c3ef4ffe5]: 
/usr/games/crawl-git-43051b6e75(+0xccce52) [0x606c3ef50e52]: 
/usr/games/crawl-git-43051b6e75(+0xccd064) [0x606c3ef51064]: 
/usr/games/crawl-git-43051b6e75(+0xccbec3) [0x606c3ef4fec3]: 
/usr/games/crawl-git-43051b6e75(+0xccd4a4) [0x606c3ef514a4]: 
/usr/games/crawl-git-43051b6e75(lua_pcallk+0x95) [0x606c3ef4d755]: 
/usr/games/crawl-git-43051b6e75(_ZN4CLua5pcallEii+0x60) [0x606c3e75a390]: CLua::pcall(int, int)
/usr/games/crawl-git-43051b6e75(_ZN4CLua6callfnEPKcii+0xb4) [0x606c3e75bcb4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-43051b6e75(_Z13do_crash_dumpv+0x1b84) [0x606c3e784d24]: do_crash_dump()
/usr/games/crawl-git-43051b6e75(_Z20crash_signal_handleri+0x1fa) [0x606c3e77587a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7ba76c91a330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7ba76c973b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7ba76c91a27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7ba76c8fd8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7ba76c8fe7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7ba76c97dff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x7ba76c98038c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7ba76c982dae]: 
/usr/games/crawl-git-43051b6e75(+0x4d36ee) [0x606c3e7576ee]: 
/usr/games/crawl-git-43051b6e75(+0xcd1049) [0x606c3ef55049]: 
/usr/games/crawl-git-43051b6e75(+0xcd794f) [0x606c3ef5b94f]: 
/usr/games/crawl-git-43051b6e75(+0xcd07a6) [0x606c3ef547a6]: 
/usr/games/crawl-git-43051b6e75(+0xcd64b6) [0x606c3ef5a4b6]: 
/usr/games/crawl-git-43051b6e75(_ZN4CLua5closeEv+0xbe) [0x606c3e75c59e]: CLua::close()
/usr/games/crawl-git-43051b6e75(+0x2f2c68) [0x606c3e576c68]: 
/usr/games/crawl-git-43051b6e75(+0x2f5c40) [0x606c3e579c40]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7ba76c8ff1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7ba76c8ff28b]: 
/usr/games/crawl-git-43051b6e75(_start+0x25) [0x606c3e6a7f45]: