Obtained 33 stack frames.
/usr/games/crawl-git-ae837eebe2(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x618601dd2e9f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-ae837eebe2(_Z20crash_signal_handleri+0x196) [0x618601dd3336]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x71b8c11d1330]: 
/lib/x86_64-linux-gnu/libc.so.6(abort+0x97) [0x71b8c11b48b7]: 
/usr/games/crawl-git-ae837eebe2(+0x5514d2) [0x618601de04d2]: 
/usr/games/crawl-git-ae837eebe2(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x618601de09d7]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info10_core_nameB5cxx11Ev+0x135d) [0x6186021e896d]: monster_info::_core_name[abi:cxx11]() const
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info11common_nameB5cxx11E22description_level_type+0x44) [0x6186021e9ee4]: monster_info::common_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info9full_nameB5cxx11E22description_level_type+0x192) [0x6186021eb5e2]: monster_info::full_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_ZNK7monster9full_nameB5cxx11E22description_level_type+0xcb) [0x618602258e4b]: monster::full_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_Z13debug_mon_strB5cxx11PK7monster+0x95) [0x618601de7fa5]: debug_mon_str[abi:cxx11](monster const*)
/usr/games/crawl-git-ae837eebe2(_ZN10game_state4dumpEv+0x3f7) [0x618602442857]: game_state::dump()
/usr/games/crawl-git-ae837eebe2(_Z13do_crash_dumpv+0xb3f) [0x618601de17ff]: do_crash_dump()
/usr/games/crawl-git-ae837eebe2(_Z20crash_signal_handleri+0x1fa) [0x618601dd339a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x71b8c11d1330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x71b8c122ab2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x71b8c11d127e]: 
/usr/games/crawl-git-ae837eebe2(+0x5514cd) [0x618601de04cd]: 
/usr/games/crawl-git-ae837eebe2(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x618601de09d7]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info10_core_nameB5cxx11Ev+0x135d) [0x6186021e896d]: monster_info::_core_name[abi:cxx11]() const
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info11common_nameB5cxx11E22description_level_type+0x44) [0x6186021e9ee4]: monster_info::common_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_ZNK12monster_info9full_nameB5cxx11E22description_level_type+0x192) [0x6186021eb5e2]: monster_info::full_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_ZNK7monster9full_nameB5cxx11E22description_level_type+0xcb) [0x618602258e4b]: monster::full_name[abi:cxx11](description_level_type) const
/usr/games/crawl-git-ae837eebe2(_Z17monster_polymorphP7monster12monster_type15poly_power_type+0x1db) [0x61860220d3db]: monster_polymorph(monster*, monster_type, poly_power_type)
/usr/games/crawl-git-ae837eebe2(_ZN7monster18apply_enchantmentsEv+0xe1) [0x6186021cbdf1]: monster::apply_enchantments()
/usr/games/crawl-git-ae837eebe2(_Z15handle_monstersb+0x201) [0x61860216a8e1]: handle_monsters(bool)
/usr/games/crawl-git-ae837eebe2(_Z12world_reactsv+0x142) [0x6186025b6e92]: world_reacts()
/usr/games/crawl-git-ae837eebe2(+0xd2a907) [0x6186025b9907]: 
/usr/games/crawl-git-ae837eebe2(+0xd2b27d) [0x6186025ba27d]: 
/usr/games/crawl-git-ae837eebe2(main+0x1f7) [0x618601d04d77]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x71b8c11b61ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x71b8c11b628b]: 
/usr/games/crawl-git-ae837eebe2(_start+0x25) [0x618601d05865]: