Obtained 25 stack frames.
/usr/games/crawl-git-babda3026e(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x64a86f80810f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-babda3026e(_Z20crash_signal_handleri+0x196) [0x64a86f8085a6]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7e9cf242d330]: 
/usr/games/crawl-git-babda3026e(_Z12dgn_vault_at9coord_def+0x42) [0x64a86f8cde82]: dgn_vault_at(coord_def)
/usr/games/crawl-git-babda3026e(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x55) [0x64a86f8ade45]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-git-babda3026e(_Z13do_crash_dumpv+0x2237) [0x64a86f818197]: do_crash_dump()
/usr/games/crawl-git-babda3026e(_Z20crash_signal_handleri+0x1fa) [0x64a86f80860a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7e9cf242d330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7e9cf2486b2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7e9cf242d27e]: 
/usr/games/crawl-git-babda3026e(+0x56176d) [0x64a86f81576d]: 
/usr/games/crawl-git-babda3026e(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x64a86f815c77]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-babda3026e(_ZNK9PlaceInfo15assert_validityEv+0xfe) [0x64a86fd09bee]: PlaceInfo::assert_validity() const
/usr/games/crawl-git-babda3026e(_ZN6player14set_place_infoE9PlaceInfo+0x12) [0x64a86fd09fa2]: player::set_place_info(PlaceInfo)
/usr/games/crawl-git-babda3026e(+0xbf23db) [0x64a86fea63db]: 
/usr/games/crawl-git-babda3026e(_Z8tag_readR6reader8tag_type+0x170) [0x64a86fec54f0]: tag_read(reader&, tag_type)
/usr/games/crawl-git-babda3026e(+0x66b597) [0x64a86f91f597]: 
/usr/games/crawl-git-babda3026e(+0x66d7d6) [0x64a86f9217d6]: 
/usr/games/crawl-git-babda3026e(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x23) [0x64a86f922873]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-babda3026e(_Z12startup_stepv+0x947) [0x64a86fe6f9c7]: startup_step()
/usr/games/crawl-git-babda3026e(+0xd4b6fd) [0x64a86ffff6fd]: 
/usr/games/crawl-git-babda3026e(main+0x1f7) [0x64a86f7368b7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7e9cf24121ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7e9cf241228b]: 
/usr/games/crawl-git-babda3026e(_start+0x25) [0x64a86f7373a5]: