Obtained 36 stack frames.
/usr/games/crawl-git-6d9ebc1a8c(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x6409b726d77e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-6d9ebc1a8c(_Z20crash_signal_handleri+0x18f) [0x6409b726dbef]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7efcb5c11330]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcd57cb) [0x6409b7a507cb]: 
/usr/games/crawl-git-6d9ebc1a8c(lua_next+0x32) [0x6409b7a42d82]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xce0391) [0x6409b7a5b391]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccad63) [0x6409b7a45d63]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccafb2) [0x6409b7a45fb2]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcd9864) [0x6409b7a54864]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccb07d) [0x6409b7a4607d]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcc9ec3) [0x6409b7a44ec3]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccb4a4) [0x6409b7a464a4]: 
/usr/games/crawl-git-6d9ebc1a8c(lua_pcallk+0x95) [0x6409b7a42755]: 
/usr/games/crawl-git-6d9ebc1a8c(_ZN4CLua5pcallEii+0x60) [0x6409b7252770]: CLua::pcall(int, int)
/usr/games/crawl-git-6d9ebc1a8c(_ZN4CLua6callfnEPKcii+0xb4) [0x6409b7254094]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-6d9ebc1a8c(_Z13do_crash_dumpv+0x1b84) [0x6409b727d104]: do_crash_dump()
/usr/games/crawl-git-6d9ebc1a8c(_Z20crash_signal_handleri+0x1fa) [0x6409b726dc5a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7efcb5c11330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7efcb5c6ab2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7efcb5c1127e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7efcb5bf48ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7efcb5bf57b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7efcb5c74ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x7efcb5c7738c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7efcb5c79dae]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcdd9f1) [0x6409b7a589f1]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccf049) [0x6409b7a4a049]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccc3f1) [0x6409b7a473f1]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcce7a6) [0x6409b7a497a6]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcd44b6) [0x6409b7a4f4b6]: 
/usr/games/crawl-git-6d9ebc1a8c(_ZN4CLua5closeEv+0xbe) [0x6409b725497e]: CLua::close()
/usr/games/crawl-git-6d9ebc1a8c(+0x2f3288) [0x6409b706e288]: 
/usr/games/crawl-git-6d9ebc1a8c(+0x2f6254) [0x6409b7071254]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7efcb5bf61ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7efcb5bf628b]: 
/usr/games/crawl-git-6d9ebc1a8c(_start+0x25) [0x6409b719f4f5]: