Obtained 38 stack frames.
/usr/games/crawl-git-6d9ebc1a8c(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x603fc2f5977e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-6d9ebc1a8c(_Z20crash_signal_handleri+0x18f) [0x603fc2f59bef]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x735b7ec3e330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x735b7ec97b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x735b7ec3e27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x735b7ec218ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x735b7ec227b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x735b7eca1ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9b7c) [0x735b7eca2b7c]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa9cda) [0x735b7eca2cda]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xaba90) [0x735b7eca4a90]: 
/lib/x86_64-linux-gnu/libc.so.6(malloc+0x1a2) [0x735b7eca67f2]: 
/lib/x86_64-linux-gnu/libc.so.6(opendir+0x8c) [0x735b7ece660c]: 
/usr/games/crawl-git-6d9ebc1a8c(_Z10dir_existsRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x31) [0x603fc35c4d31]: dir_exists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-6d9ebc1a8c(_Z11check_mkdirRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPS4_b+0xf6) [0x603fc3062e56]: 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-6d9ebc1a8c(+0x5fc35e) [0x603fc306335e]: 
/usr/games/crawl-git-6d9ebc1a8c(_Z20get_savedir_filenameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x3b) [0x603fc30675bb]: get_savedir_filename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-6d9ebc1a8c(_Z13do_crash_dumpv+0x255) [0x603fc2f677d5]: do_crash_dump()
/usr/games/crawl-git-6d9ebc1a8c(_Z20crash_signal_handleri+0x1fa) [0x603fc2f59c5a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x735b7ec3e330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x735b7ec97b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x735b7ec3e27e]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0xdf) [0x735b7ec218ff]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x297b6) [0x735b7ec227b6]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xa8ff5) [0x735b7eca1ff5]: 
/lib/x86_64-linux-gnu/libc.so.6(+0xab38c) [0x735b7eca438c]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_free+0x7e) [0x735b7eca6dae]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcdd9f1) [0x603fc37449f1]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccf049) [0x603fc3736049]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xccc3b9) [0x603fc37333b9]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcce7a6) [0x603fc37357a6]: 
/usr/games/crawl-git-6d9ebc1a8c(+0xcd44b6) [0x603fc373b4b6]: 
/usr/games/crawl-git-6d9ebc1a8c(_ZN4CLua5closeEv+0xbe) [0x603fc2f4097e]: CLua::close()
/usr/games/crawl-git-6d9ebc1a8c(+0x2f3288) [0x603fc2d5a288]: 
/usr/games/crawl-git-6d9ebc1a8c(+0x2f6254) [0x603fc2d5d254]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x735b7ec231ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x735b7ec2328b]: 
/usr/games/crawl-git-6d9ebc1a8c(_start+0x25) [0x603fc2e8b4f5]: