Obtained 25 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5615fec39f4e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x5615fec3a3bf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x763418c1c330]: 
/usr/games/crawl-0.34(lua_getglobal+0x25) [0x5615ff418155]: 
/usr/games/crawl-0.34(_ZN4CLua10pushglobalERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x16d) [0x5615fec1e2bd]: CLua::pushglobal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.34(_ZN4CLua6callfnEPKcii+0x80) [0x5615fec20830]: CLua::callfn(char const*, int, int)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x1b84) [0x5615fec498f4]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x5615fec3a42a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x763418c1c330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x763418c75b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x763418c1c27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x763418bff8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x763418c007b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x763418c7fff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x763418c8212c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x763418c84dae]: 
/usr/games/crawl-0.34(+0xcea181) [0x5615ff42f181]: 
/usr/games/crawl-0.34(+0xcdb7d9) [0x5615ff4207d9]: 
/usr/games/crawl-0.34(+0xce0c6d) [0x5615ff425c6d]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x5615fec2114e]: CLua::close()
/usr/games/crawl-0.34(+0x2f5666) [0x5615fea3a666]: 
/usr/games/crawl-0.34(+0x2f8632) [0x5615fea3d632]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x763418c011ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x763418c0128b]: 
/usr/games/crawl-0.34(_start+0x25) [0x5615feb6c5d5]: