Obtained 25 stack frames.
/usr/games/crawl-git-b005dc6fb0(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x5cace727910f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-b005dc6fb0(_Z20crash_signal_handleri+0x196) [0x5cace72795a6]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c3a06470330]: 
/usr/games/crawl-git-b005dc6fb0(_Z12dgn_vault_at9coord_def+0x42) [0x5cace733ee82]: dgn_vault_at(coord_def)
/usr/games/crawl-git-b005dc6fb0(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x55) [0x5cace731ee45]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-git-b005dc6fb0(_Z13do_crash_dumpv+0x2237) [0x5cace7289197]: do_crash_dump()
/usr/games/crawl-git-b005dc6fb0(_Z20crash_signal_handleri+0x1fa) [0x5cace727960a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7c3a06470330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7c3a064c9b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7c3a0647027e]: 
/usr/games/crawl-git-b005dc6fb0(+0x56176d) [0x5cace728676d]: 
/usr/games/crawl-git-b005dc6fb0(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x5cace7286c77]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-b005dc6fb0(_ZNK9PlaceInfo15assert_validityEv+0xfe) [0x5cace777abee]: PlaceInfo::assert_validity() const
/usr/games/crawl-git-b005dc6fb0(_ZN6player14set_place_infoE9PlaceInfo+0x12) [0x5cace777afa2]: player::set_place_info(PlaceInfo)
/usr/games/crawl-git-b005dc6fb0(+0xbf23fb) [0x5cace79173fb]: 
/usr/games/crawl-git-b005dc6fb0(_Z8tag_readR6reader8tag_type+0x170) [0x5cace7936510]: tag_read(reader&, tag_type)
/usr/games/crawl-git-b005dc6fb0(+0x66b597) [0x5cace7390597]: 
/usr/games/crawl-git-b005dc6fb0(+0x66d7d6) [0x5cace73927d6]: 
/usr/games/crawl-git-b005dc6fb0(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x23) [0x5cace7393873]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-b005dc6fb0(_Z12startup_stepv+0x947) [0x5cace78e09e7]: startup_step()
/usr/games/crawl-git-b005dc6fb0(+0xd4b71d) [0x5cace7a7071d]: 
/usr/games/crawl-git-b005dc6fb0(main+0x1f7) [0x5cace71a78b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7c3a064551ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7c3a0645528b]: 
/usr/games/crawl-git-b005dc6fb0(_start+0x25) [0x5cace71a83a5]: