Obtained 36 stack frames.
/usr/games/crawl-git-ac9929eef6(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x641d0cebe14e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-ac9929eef6(_Z20crash_signal_handleri+0x18f) [0x641d0cebe5bf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79e452442910]: 
/usr/games/crawl-git-ac9929eef6(+0xcdf61b) [0x641d0d6a961b]: 
/usr/games/crawl-git-ac9929eef6(lua_next+0x32) [0x641d0d69bc22]: 
/usr/games/crawl-git-ac9929eef6(+0xcea341) [0x641d0d6b4341]: 
/usr/games/crawl-git-ac9929eef6(+0xcd4c03) [0x641d0d69ec03]: 
/usr/games/crawl-git-ac9929eef6(+0xcd4e52) [0x641d0d69ee52]: 
/usr/games/crawl-git-ac9929eef6(+0xce3754) [0x641d0d6ad754]: 
/usr/games/crawl-git-ac9929eef6(+0xcd4f1d) [0x641d0d69ef1d]: 
/usr/games/crawl-git-ac9929eef6(+0xcd3d63) [0x641d0d69dd63]: 
/usr/games/crawl-git-ac9929eef6(+0xcd5344) [0x641d0d69f344]: 
/usr/games/crawl-git-ac9929eef6(lua_pcallk+0x95) [0x641d0d69b5f5]: 
/usr/games/crawl-git-ac9929eef6(_ZN4CLua5pcallEii+0x60) [0x641d0cea3070]: CLua::pcall(int, int)
/usr/games/crawl-git-ac9929eef6(_ZN4CLua6callfnEPKcii+0xb4) [0x641d0cea4994]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-ac9929eef6(_Z13do_crash_dumpv+0x1b94) [0x641d0cecdae4]: do_crash_dump()
/usr/games/crawl-git-ac9929eef6(_Z20crash_signal_handleri+0x1fa) [0x641d0cebe62a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x79e452442910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x79e45249999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x79e452442866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x79e4524268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x79e452427750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x79e4524a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x79e4524a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x79e4524a87f3]: 
/usr/games/crawl-git-ac9929eef6(+0xce78e1) [0x641d0d6b18e1]: 
/usr/games/crawl-git-ac9929eef6(+0xcd8ee9) [0x641d0d6a2ee9]: 
/usr/games/crawl-git-ac9929eef6(+0xcd6231) [0x641d0d6a0231]: 
/usr/games/crawl-git-ac9929eef6(+0xcd8646) [0x641d0d6a2646]: 
/usr/games/crawl-git-ac9929eef6(+0xcde336) [0x641d0d6a8336]: 
/usr/games/crawl-git-ac9929eef6(_ZN4CLua5closeEv+0xbe) [0x641d0cea527e]: CLua::close()
/usr/games/crawl-git-ac9929eef6(+0x2f498a) [0x641d0ccbe98a]: 
/usr/games/crawl-git-ac9929eef6(+0x2f7953) [0x641d0ccc1953]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x79e4524280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x79e452428189]: 
/usr/games/crawl-git-ac9929eef6(_start+0x25) [0x641d0cdf0795]: