Obtained 38 stack frames.
/usr/games/crawl-git-ff61f77f9c(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5fec6c6e59ce]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-ff61f77f9c(_Z20crash_signal_handleri+0x18f) [0x5fec6c6e5e3f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7d3a42105330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7d3a4215eb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7d3a4210527e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7d3a420e88ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7d3a420e97b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7d3a42168ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9b7c) [0x7d3a42169b7c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9d2b) [0x7d3a42169d2b]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xaba90) [0x7d3a4216ba90]: 
/lib/x86_64-linux-gnu/libc.so.6(malloc+0x1a2) [0x7d3a4216d7f2]: 
/lib/x86_64-linux-gnu/libc.so.6(opendir+0x8c) [0x7d3a421ad60c]: 
/usr/games/crawl-git-ff61f77f9c(_Z10dir_existsRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x31) [0x5fec6cd53ea1]: dir_exists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-ff61f77f9c(_Z11check_mkdirRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS4_b+0xf6) [0x5fec6c7efa56]: check_mkdir(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, bool)
/usr/games/crawl-git-ff61f77f9c(+0x5fef5e) [0x5fec6c7eff5e]: 
/usr/games/crawl-git-ff61f77f9c(_Z20get_savedir_filenameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x3b) [0x5fec6c7f41fb]: get_savedir_filename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-ff61f77f9c(_Z13do_crash_dumpv+0x255) [0x5fec6c6f3a25]: do_crash_dump()
/usr/games/crawl-git-ff61f77f9c(_Z20crash_signal_handleri+0x1fa) [0x5fec6c6e5eaa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7d3a42105330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7d3a4215eb2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7d3a4210527e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7d3a420e88ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7d3a420e97b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7d3a42168ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x7d3a4216b38c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7d3a4216ddae]: 
/usr/games/crawl-git-ff61f77f9c(+0x4d6d1e) [0x5fec6c6c7d1e]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd9159) [0x5fec6ceca159]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd6515) [0x5fec6cec7515]: 
/usr/games/crawl-git-ff61f77f9c(+0xcd88b6) [0x5fec6cec98b6]: 
/usr/games/crawl-git-ff61f77f9c(+0xcde5c6) [0x5fec6cecf5c6]: 
/usr/games/crawl-git-ff61f77f9c(_ZN4CLua5closeEv+0xbe) [0x5fec6c6ccbce]: CLua::close()
/usr/games/crawl-git-ff61f77f9c(+0x2f50e0) [0x5fec6c4e60e0]: 
/usr/games/crawl-git-ff61f77f9c(+0x2f80b8) [0x5fec6c4e90b8]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7d3a420ea1ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7d3a420ea28b]: 
/usr/games/crawl-git-ff61f77f9c(_start+0x25) [0x5fec6c618055]: