Obtained 28 stack frames.
/usr/games/crawl-git-17eea93bd4(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5ff44ccb44ee]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-17eea93bd4(_Z20crash_signal_handleri+0x18f) [0x5ff44ccb495f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x72f690c42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x72f690c9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x72f690c42866]: 
/usr/games/crawl-git-17eea93bd4(+0x49096d) [0x5ff44ccc196d]: 
/usr/games/crawl-git-17eea93bd4(_Z10die_nolinePKcz+0x16b) [0x5ff44ccc220b]: die_noline(char const*, ...)
/usr/games/crawl-git-17eea93bd4(_Z20crash_signal_handleri+0x2d0) [0x5ff44ccb4aa0]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x72f690c42910]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xce97) [0x72f691660e97]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x1a1f5) [0x72f69166e1f5]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xae23) [0x72f69165ee23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_resume+0x72) [0x72f691661072]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x21937) [0x72f691675937]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x21a23) [0x72f691675a23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xfcfd) [0x72f691663cfd]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x1a2ba) [0x72f69166e2ba]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xe71d) [0x72f69166271d]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xae23) [0x72f69165ee23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xd7b0) [0x72f6916617b0]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_pcall+0x5c) [0x72f6916618dc]: 
/usr/games/crawl-git-17eea93bd4(_ZN4CLua6callfnEPKcii+0xca) [0x5ff44cc9ba1a]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-17eea93bd4(+0xbdcece) [0x5ff44d40dece]: 
/usr/games/crawl-git-17eea93bd4(+0xbdda55) [0x5ff44d40ea55]: 
/usr/games/crawl-git-17eea93bd4(main+0x1f7) [0x5ff44cbef407]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x72f690c280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x72f690c28189]: 
/usr/games/crawl-git-17eea93bd4(_start+0x25) [0x5ff44cbefe25]: