Obtained 23 stack frames.
/usr/games/crawl-git-90209b8f76(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x62a1bee42eae]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-90209b8f76(_Z20crash_signal_handleri+0x18f) [0x62a1bee4331f]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x760eaea42910]: 
/usr/games/crawl-git-90209b8f76(_Z13handle_hangupi+0) [0x62a1bf10baf0]: handle_hangup(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x760eaea42910]: 
/lib/x86_64-linux-gnu/libc.so.6(wait4+0x15) [0x760eaeb0fbf5]: 
/usr/games/crawl-git-90209b8f76(_Z8call_gdbP8_IO_FILE+0xec) [0x62a1bee4355c]: call_gdb(_IO_FILE*)
/usr/games/crawl-git-90209b8f76(_Z13do_crash_dumpv+0x458) [0x62a1bee510b8]: do_crash_dump()
/usr/games/crawl-git-90209b8f76(_Z20crash_signal_handleri+0x1fa) [0x62a1bee4338a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x760eaea42910]: 
/usr/games/crawl-git-90209b8f76(_ZN5actor17stop_constrictingEjbbRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x57) [0x62a1bedaedb7]: actor::stop_constricting(unsigned int, bool, bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-90209b8f76(_ZN5actor22stop_being_constrictedEbRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x33) [0x62a1bedaee63]: actor::stop_being_constricted(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-90209b8f76(_Z11monster_dieR7monster11killer_typeibb+0x237) [0x62a1bf2184a7]: monster_die(monster&, killer_type, int, bool, bool)
/usr/games/crawl-git-90209b8f76(_ZN5actor28constriction_damage_defenderERS_+0x68c) [0x62a1bedaf9dc]: actor::constriction_damage_defender(actor&)
/usr/games/crawl-git-90209b8f76(_ZN5actor19handle_constrictionEv+0xc3) [0x62a1bedafbf3]: actor::handle_constriction()
/usr/games/crawl-git-90209b8f76(_Z13player_reactsv+0x74b) [0x62a1bf33236b]: player_reacts()
/usr/games/crawl-git-90209b8f76(_Z12world_reactsv+0x765) [0x62a1bf5f1c35]: world_reacts()
/usr/games/crawl-git-90209b8f76(+0xc92d79) [0x62a1bf5f3d79]: 
/usr/games/crawl-git-90209b8f76(+0xc938a5) [0x62a1bf5f48a5]: 
/usr/games/crawl-git-90209b8f76(main+0x1f7) [0x62a1bed77297]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x760eaea280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x760eaea28189]: 
/usr/games/crawl-git-90209b8f76(_start+0x25) [0x62a1bed77d85]: