Obtained 38 stack frames.
/usr/games/crawl-0.34(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x64a7ef202b1e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x18f) [0x64a7ef202f8f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7e7c92842910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7e7c9289999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7e7c92842866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7e7c928268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7e7c92827750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7e7c928a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa4794) [0x7e7c928a4794]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa4939) [0x7e7c928a4939]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa65b8) [0x7e7c928a65b8]: 
/lib/x86_64-linux-gnu/libc.so.6(malloc+0x19a) [0x7e7c928a824a]: 
/lib/x86_64-linux-gnu/libc.so.6(opendir+0x85) [0x7e7c928e61a5]: 
/usr/games/crawl-0.34(_Z10dir_existsRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x31) [0x64a7ef873971]: dir_exists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.34(_Z11check_mkdirRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS4_b+0xf6) [0x64a7ef30cef6]: 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-0.34(+0x5ff3fe) [0x64a7ef30d3fe]: 
/usr/games/crawl-0.34(_Z20get_savedir_filenameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x3b) [0x64a7ef31165b]: get_savedir_filename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-0.34(_Z13do_crash_dumpv+0x255) [0x64a7ef210b95]: do_crash_dump()
/usr/games/crawl-0.34(_Z20crash_signal_handleri+0x1fa) [0x64a7ef202ffa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7e7c92842910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7e7c9289999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7e7c92842866]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd7) [0x7e7c928268b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x27750) [0x7e7c92827750]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa3c67) [0x7e7c928a3c67]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa5ea4) [0x7e7c928a5ea4]: 
/lib/x86_64-linux-gnu/libc.so.6(free+0x73) [0x7e7c928a87f3]: 
/usr/games/crawl-0.34(+0xcea911) [0x64a7ef9f8911]: 
/usr/games/crawl-0.34(+0xcdbf19) [0x64a7ef9e9f19]: 
/usr/games/crawl-0.34(+0xcd92d5) [0x64a7ef9e72d5]: 
/usr/games/crawl-0.34(+0xcdb676) [0x64a7ef9e9676]: 
/usr/games/crawl-0.34(+0xce1366) [0x64a7ef9ef366]: 
/usr/games/crawl-0.34(_ZN4CLua5closeEv+0xbe) [0x64a7ef1e9c4e]: CLua::close()
/usr/games/crawl-0.34(+0x2f50ac) [0x64a7ef0030ac]: 
/usr/games/crawl-0.34(+0x2f8075) [0x64a7ef006075]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7e7c928280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7e7c92828189]: 
/usr/games/crawl-0.34(_start+0x25) [0x64a7ef135015]: