Obtained 33 stack frames.
/usr/games/crawl-git-17eea93bd4(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5c75cc7994ee]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-17eea93bd4(_Z20crash_signal_handleri+0x18f) [0x5c75cc79995f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7fb073642910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7fb07369999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7fb073642866]: 
/usr/games/crawl-git-17eea93bd4(+0x49096d) [0x5c75cc7a696d]: 
/usr/games/crawl-git-17eea93bd4(_Z10die_nolinePKcz+0x16b) [0x5c75cc7a720b]: die_noline(char const*, ...)
/usr/games/crawl-git-17eea93bd4(_Z20crash_signal_handleri+0x2d0) [0x5c75cc799aa0]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7fb073642910]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x22) [0x7fb0736a87a2]: 
/usr/games/crawl-git-17eea93bd4(+0x46656e) [0x5c75cc77c56e]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xc5b2) [0x7fb073ef15b2]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xdedf) [0x7fb073ef2edf]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xead2) [0x7fb073ef3ad2]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xefe5) [0x7fb073ef3fe5]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x1afaf) [0x7fb073efffaf]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xae23) [0x7fb073eefe23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_resume+0x72) [0x7fb073ef2072]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x21937) [0x7fb073f06937]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x21a23) [0x7fb073f06a23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xfcfd) [0x7fb073ef4cfd]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0x1a2ba) [0x7fb073eff2ba]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xe71d) [0x7fb073ef371d]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xae23) [0x7fb073eefe23]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(+0xd7b0) [0x7fb073ef27b0]: 
/lib/x86_64-linux-gnu/liblua5.1.so.0(lua_pcall+0x5c) [0x7fb073ef28dc]: 
/usr/games/crawl-git-17eea93bd4(_ZN4CLua6callfnEPKcii+0xca) [0x5c75cc780a1a]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-17eea93bd4(+0xbdcece) [0x5c75ccef2ece]: 
/usr/games/crawl-git-17eea93bd4(+0xbdda55) [0x5c75ccef3a55]: 
/usr/games/crawl-git-17eea93bd4(main+0x1f7) [0x5c75cc6d4407]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7fb0736280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7fb073628189]: 
/usr/games/crawl-git-17eea93bd4(_start+0x25) [0x5c75cc6d4e25]: