Obtained 36 stack frames.
/usr/games/crawl-git-5558ef20da(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x6254a20ab15e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-5558ef20da(_Z20crash_signal_handleri+0x18f) [0x6254a20ab5cf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7044e49c9330]: 
/usr/games/crawl-git-5558ef20da(+0xcdf1ab) [0x6254a28961ab]: 
/usr/games/crawl-git-5558ef20da(lua_next+0x32) [0x6254a2888762]: 
/usr/games/crawl-git-5558ef20da(+0xce9d71) [0x6254a28a0d71]: 
/usr/games/crawl-git-5558ef20da(+0xcd4743) [0x6254a288b743]: 
/usr/games/crawl-git-5558ef20da(+0xcd4992) [0x6254a288b992]: 
/usr/games/crawl-git-5558ef20da(+0xce3244) [0x6254a289a244]: 
/usr/games/crawl-git-5558ef20da(+0xcd4a5d) [0x6254a288ba5d]: 
/usr/games/crawl-git-5558ef20da(+0xcd38a3) [0x6254a288a8a3]: 
/usr/games/crawl-git-5558ef20da(+0xcd4e84) [0x6254a288be84]: 
/usr/games/crawl-git-5558ef20da(lua_pcallk+0x95) [0x6254a2888135]: 
/usr/games/crawl-git-5558ef20da(_ZN4CLua5pcallEii+0x60) [0x6254a2090150]: CLua::pcall(int, int)
/usr/games/crawl-git-5558ef20da(_ZN4CLua6callfnEPKcii+0xb4) [0x6254a2091a74]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-5558ef20da(_Z13do_crash_dumpv+0x1b84) [0x6254a20baae4]: do_crash_dump()
/usr/games/crawl-git-5558ef20da(_Z20crash_signal_handleri+0x1fa) [0x6254a20ab63a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7044e49c9330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7044e4a22b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7044e49c927e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7044e49ac8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7044e49ad7b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7044e4a2cff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x7044e4a2f12c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7044e4a31dae]: 
/usr/games/crawl-git-5558ef20da(+0xce73d1) [0x6254a289e3d1]: 
/usr/games/crawl-git-5558ef20da(+0xcd8a29) [0x6254a288fa29]: 
/usr/games/crawl-git-5558ef20da(+0xcd5d99) [0x6254a288cd99]: 
/usr/games/crawl-git-5558ef20da(+0xcd8186) [0x6254a288f186]: 
/usr/games/crawl-git-5558ef20da(+0xcdde96) [0x6254a2894e96]: 
/usr/games/crawl-git-5558ef20da(_ZN4CLua5closeEv+0xbe) [0x6254a209235e]: CLua::close()
/usr/games/crawl-git-5558ef20da(+0x2f4afc) [0x6254a1eabafc]: 
/usr/games/crawl-git-5558ef20da(+0x2f7ac8) [0x6254a1eaeac8]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7044e49ae1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7044e49ae28b]: 
/usr/games/crawl-git-5558ef20da(_start+0x25) [0x6254a1fdd7a5]: