Obtained 36 stack frames.
/usr/games/crawl-git-71c15dacbf(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x63f8539284be]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-71c15dacbf(_Z20crash_signal_handleri+0x18f) [0x63f85392892f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x700906225330]: 
/usr/games/crawl-git-71c15dacbf(+0xcdf61b) [0x63f85411361b]: 
/usr/games/crawl-git-71c15dacbf(lua_next+0x32) [0x63f854105bd2]: 
/usr/games/crawl-git-71c15dacbf(+0xcea1e1) [0x63f85411e1e1]: 
/usr/games/crawl-git-71c15dacbf(+0xcd4bb3) [0x63f854108bb3]: 
/usr/games/crawl-git-71c15dacbf(+0xcd4e02) [0x63f854108e02]: 
/usr/games/crawl-git-71c15dacbf(+0xce36b4) [0x63f8541176b4]: 
/usr/games/crawl-git-71c15dacbf(+0xcd4ecd) [0x63f854108ecd]: 
/usr/games/crawl-git-71c15dacbf(+0xcd3d13) [0x63f854107d13]: 
/usr/games/crawl-git-71c15dacbf(+0xcd52f4) [0x63f8541092f4]: 
/usr/games/crawl-git-71c15dacbf(lua_pcallk+0x95) [0x63f8541055a5]: 
/usr/games/crawl-git-71c15dacbf(_ZN4CLua5pcallEii+0x60) [0x63f85390d4b0]: CLua::pcall(int, int)
/usr/games/crawl-git-71c15dacbf(_ZN4CLua6callfnEPKcii+0xb4) [0x63f85390edd4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-71c15dacbf(_Z13do_crash_dumpv+0x1b84) [0x63f853937e44]: do_crash_dump()
/usr/games/crawl-git-71c15dacbf(_Z20crash_signal_handleri+0x1fa) [0x63f85392899a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x700906225330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x70090627eb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x70090622527e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7009062088ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7009062097b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x700906288ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x70090628b38c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x70090628ddae]: 
/usr/games/crawl-git-71c15dacbf(+0xce7841) [0x63f85411b841]: 
/usr/games/crawl-git-71c15dacbf(+0xcd8e99) [0x63f85410ce99]: 
/usr/games/crawl-git-71c15dacbf(+0xcd622d) [0x63f85410a22d]: 
/usr/games/crawl-git-71c15dacbf(+0xcd85f6) [0x63f85410c5f6]: 
/usr/games/crawl-git-71c15dacbf(+0xcde306) [0x63f854112306]: 
/usr/games/crawl-git-71c15dacbf(_ZN4CLua5closeEv+0xbe) [0x63f85390f6be]: CLua::close()
/usr/games/crawl-git-71c15dacbf(+0x2f4eae) [0x63f853728eae]: 
/usr/games/crawl-git-71c15dacbf(+0x2f7e7a) [0x63f85372be7a]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x70090620a1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x70090620a28b]: 
/usr/games/crawl-git-71c15dacbf(_start+0x25) [0x63f85385ab45]: