Obtained 38 stack frames.
/usr/games/crawl-git-15974c44ed(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5bec7f77176e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-15974c44ed(_Z20crash_signal_handleri+0x18f) [0x5bec7f771bdf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7a89a574c330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7a89a57a5b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7a89a574c27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7a89a572f8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7a89a57307b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7a89a57afff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9b7c) [0x7a89a57b0b7c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9d2b) [0x7a89a57b0d2b]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xaba90) [0x7a89a57b2a90]: 
/lib/x86_64-linux-gnu/libc.so.6(malloc+0x1a2) [0x7a89a57b47f2]: 
/lib/x86_64-linux-gnu/libc.so.6(opendir+0x8c) [0x7a89a57f460c]: 
/usr/games/crawl-git-15974c44ed(_Z10dir_existsRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x31) [0x5bec7fddcb31]: dir_exists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-15974c44ed(_Z11check_mkdirRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS4_b+0xf6) [0x5bec7f87ae46]: 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-15974c44ed(+0x5fc34e) [0x5bec7f87b34e]: 
/usr/games/crawl-git-15974c44ed(_Z20get_savedir_filenameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x3b) [0x5bec7f87f5ab]: get_savedir_filename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-15974c44ed(_Z13do_crash_dumpv+0x255) [0x5bec7f77f7c5]: do_crash_dump()
/usr/games/crawl-git-15974c44ed(_Z20crash_signal_handleri+0x1fa) [0x5bec7f771c4a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7a89a574c330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7a89a57a5b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7a89a574c27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x7a89a572f8ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x7a89a57307b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x7a89a57afff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9b7c) [0x7a89a57b0b7c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab025) [0x7a89a57b2025]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x7a89a57b4dae]: 
/usr/games/crawl-git-15974c44ed(+0xcdd881) [0x5bec7ff5c881]: 
/usr/games/crawl-git-15974c44ed(+0xcceed9) [0x5bec7ff4ded9]: 
/usr/games/crawl-git-15974c44ed(+0xcce636) [0x5bec7ff4d636]: 
/usr/games/crawl-git-15974c44ed(+0xcd4346) [0x5bec7ff53346]: 
/usr/games/crawl-git-15974c44ed(_ZN4CLua5closeEv+0xbe) [0x5bec7f75896e]: CLua::close()
/usr/games/crawl-git-15974c44ed(+0x2f327c) [0x5bec7f57227c]: 
/usr/games/crawl-git-15974c44ed(+0x2f6248) [0x5bec7f575248]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7a89a57311ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7a89a573128b]: 
/usr/games/crawl-git-15974c44ed(_start+0x25) [0x5bec7f6a34e5]: