Obtained 20 stack frames.
/usr/games/crawl-git-07c986e9b8(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x592b6d008c1e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-07c986e9b8(_Z20crash_signal_handleri+0x18f) [0x592b6d00908f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7a45fc842910]: 
/usr/games/crawl-git-07c986e9b8(_Z13handle_hangupi+0) [0x592b6d2cfe30]: handle_hangup(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7a45fc842910]: 
/lib/x86_64-linux-gnu/libc.so.6(wait4+0x15) [0x7a45fc90fbf5]: 
/usr/games/crawl-git-07c986e9b8(_Z8call_gdbP8_IO_FILE+0xec) [0x592b6d0092cc]: call_gdb(_IO_FILE*)
/usr/games/crawl-git-07c986e9b8(_Z13do_crash_dumpv+0x458) [0x592b6d016e78]: do_crash_dump()
/usr/games/crawl-git-07c986e9b8(_Z20crash_signal_handleri+0x1fa) [0x592b6d0090fa]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7a45fc842910]: 
/usr/games/crawl-git-07c986e9b8(_ZN20dgn_event_dispatcher10fire_eventERK9dgn_event+0xd3) [0x592b6d0a4fd3]: dgn_event_dispatcher::fire_event(dgn_event const&)
/usr/games/crawl-git-07c986e9b8(_ZN20dgn_event_dispatcher10fire_eventE14dgn_event_type+0x48) [0x592b6d0a5078]: dgn_event_dispatcher::fire_event(dgn_event_type)
/usr/games/crawl-git-07c986e9b8(_Z23run_environment_effectsv+0x2b) [0x592b6d6c74eb]: run_environment_effects()
/usr/games/crawl-git-07c986e9b8(_Z12world_reactsv+0x111) [0x592b6d7ba031]: world_reacts()
/usr/games/crawl-git-07c986e9b8(+0xc9a7ca) [0x592b6d7bc7ca]: 
/usr/games/crawl-git-07c986e9b8(+0xc9b2f5) [0x592b6d7bd2f5]: 
/usr/games/crawl-git-07c986e9b8(main+0x1f7) [0x592b6cf3c1a7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7a45fc8280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7a45fc828189]: 
/usr/games/crawl-git-07c986e9b8(_start+0x25) [0x592b6cf3cc95]: