Obtained 17 stack frames.
/usr/games/crawl-git-ef065ebc68(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x62377bc709be]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-ef065ebc68(_Z20crash_signal_handleri+0x18f) [0x62377bc70e2f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7eed87a42910]: 
/lib/x86_64-linux-gnu/libc.so.6(wait4+0x15) [0x7eed87b0fbf5]: 
/usr/games/crawl-git-ef065ebc68(_Z8call_gdbP8_IO_FILE+0xec) [0x62377bc7106c]: call_gdb(_IO_FILE*)
/usr/games/crawl-git-ef065ebc68(_Z13do_crash_dumpv+0x458) [0x62377bc7ec38]: do_crash_dump()
/usr/games/crawl-git-ef065ebc68(_Z20crash_signal_handleri+0x1fa) [0x62377bc70e9a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7eed87a42910]: 
/usr/games/crawl-git-ef065ebc68(_ZN11map_markers7run_allEi15map_marker_type+0x2e) [0x62377bfa2b2e]: map_markers::run_all(int, map_marker_type)
/usr/games/crawl-git-ef065ebc68(_Z23run_environment_effectsv+0x197) [0x62377c3493f7]: run_environment_effects()
/usr/games/crawl-git-ef065ebc68(_Z12world_reactsv+0x111) [0x62377c4403d1]: world_reacts()
/usr/games/crawl-git-ef065ebc68(+0xccfc44) [0x62377c442c44]: 
/usr/games/crawl-git-ef065ebc68(+0xcd0875) [0x62377c443875]: 
/usr/games/crawl-git-ef065ebc68(main+0x1f7) [0x62377bba20e7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7eed87a280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7eed87a28189]: 
/usr/games/crawl-git-ef065ebc68(_start+0x25) [0x62377bba2bd5]: