Obtained 16 stack frames.
/usr/games/crawl-git-4de66ed42b(_Z17write_stack_traceP8_IO_FILEi+0x28) [0x561239e2b9f8]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-4de66ed42b(_Z20crash_signal_handleri+0x1bf) [0x561239e2be3f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f80f8552060]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0xcf) [0x7f80f88cef9f]: 
/usr/games/crawl-git-4de66ed42b(+0x33e266) [0x561239e33266]: 
/usr/games/crawl-git-4de66ed42b(+0x33e623) [0x561239e33623]: 
/usr/games/crawl-git-4de66ed42b(_Z20crash_signal_handleri+0x274) [0x561239e2bef4]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x33060) [0x7f80f8552060]: 
/usr/games/crawl-git-4de66ed42b(_ZNSt8_Rb_treeISt5dequeIiSaIiEESt4pairIKS2_S2_ESt10_Select1stIS5_ESt4lessIS2_ESaIS5_EE4findERS4_+0xa) [0x56123a061bca]: std::_Rb_tree<std::deque<int, std::allocator<int> >, std::pair<std::deque<int, std::allocator<int> > const, std::deque<int, std::allocator<int> > >, std::_Select1st<std::pair<std::deque<int, std::allocator<int> > const, std::deque<int, std::allocator<int> > > >, std::less<std::deque<int, std::allocator<int> > >, std::allocator<std::pair<std::deque<int, std::allocator<int> > const, std::deque<int, std::allocator<int> > > > >::find(std::deque<int, std::allocator<int> > const&)
/usr/games/crawl-git-4de66ed42b(+0x56b2f3) [0x56123a0602f3]: 
/usr/games/crawl-git-4de66ed42b(_Z25getch_with_command_macrosv+0x13e) [0x56123a06063e]: getch_with_command_macros()
/usr/games/crawl-git-4de66ed42b(+0x8ca8ff) [0x56123a3bf8ff]: 
/usr/games/crawl-git-4de66ed42b(+0x8cb055) [0x56123a3c0055]: 
/usr/games/crawl-git-4de66ed42b(main+0x13b) [0x561239d8fe3b]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f80f853f2e1]: 
/usr/games/crawl-git-4de66ed42b(_start+0x2a) [0x561239d9097a]: