Obtained 36 stack frames.
/usr/games/crawl-git-ff61f77f9c(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x6015dda409ce]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-ff61f77f9c(_Z20crash_signal_handleri+0x18f) [0x6015dda40e3f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x70f174851330]: 
/usr/games/crawl-git-ff61f77f9c(+0xcdf8db) [0x6015de22b8db]: 
/usr/games/crawl-git-ff61f77f9c(lua_next+0x32) [0x6015de21de92]: 
/usr/games/crawl-git-ff61f77f9c(+0xcea4a1) [0x6015de2364a1]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd4e73) [0x6015de220e73]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd50c2) [0x6015de2210c2]: 
/usr/games/crawl-git-ff61f77f9c(+0xce3974) [0x6015de22f974]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd518d) [0x6015de22118d]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd3fd3) [0x6015de21ffd3]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd55b4) [0x6015de2215b4]: 
/usr/games/crawl-git-ff61f77f9c(lua_pcallk+0x95) [0x6015de21d865]: 
/usr/games/crawl-git-ff61f77f9c(_ZN4CLua5pcallEii+0x60) [0x6015dda259c0]: CLua::pcall(int, int)
/usr/games/crawl-git-ff61f77f9c(_ZN4CLua6callfnEPKcii+0xb4) [0x6015dda272e4]: CLua::callfn(char const*, int, int)
/usr/games/crawl-git-ff61f77f9c(_Z13do_crash_dumpv+0x1b84) [0x6015dda50354]: do_crash_dump()
/usr/games/crawl-git-ff61f77f9c(_Z20crash_signal_handleri+0x1fa) [0x6015dda40eaa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x70f174851330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x70f1748aab2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x70f17485127e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x70f1748348ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x70f1748357b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x70f1748b4ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab12c) [0x70f1748b712c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x70f1748b9dae]: 
/usr/games/crawl-git-ff61f77f9c(+0xce7b01) [0x6015de233b01]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd9159) [0x6015de225159]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd64a1) [0x6015de2224a1]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd88b6) [0x6015de2248b6]: 
/usr/games/crawl-git-ff61f77f9c(+0xcde5c6) [0x6015de22a5c6]: 
/usr/games/crawl-git-ff61f77f9c(_ZN4CLua5closeEv+0xbe) [0x6015dda27bce]: CLua::close()
/usr/games/crawl-git-ff61f77f9c(+0x2f50ec) [0x6015dd8410ec]: 
/usr/games/crawl-git-ff61f77f9c(+0x2f80b8) [0x6015dd8440b8]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x70f1748361ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x70f17483628b]: 
/usr/games/crawl-git-ff61f77f9c(_start+0x25) [0x6015dd973055]: