Obtained 25 stack frames.
/usr/games/crawl-git-e0b5820336(_Z17write_stack_traceP8_IO_FILE+0x3f) [0x5a3358f6648f]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-e0b5820336(_Z20crash_signal_handleri+0x196) [0x5a3358f66926]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7eb6eb751330]: 
/usr/games/crawl-git-e0b5820336(_Z12dgn_vault_at9coord_def+0x42) [0x5a335902c042]: dgn_vault_at(coord_def)
/usr/games/crawl-git-e0b5820336(_Z23raw_feature_descriptionB5cxx11RK9coord_def+0x55) [0x5a335900c005]: raw_feature_description[abi:cxx11](coord_def const&)
/usr/games/crawl-git-e0b5820336(_Z13do_crash_dumpv+0x2237) [0x5a3358f76517]: do_crash_dump()
/usr/games/crawl-git-e0b5820336(_Z20crash_signal_handleri+0x1fa) [0x5a3358f6698a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x45330) [0x7eb6eb751330]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11c) [0x7eb6eb7aab2c]: 
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x1e) [0x7eb6eb75127e]: 
/usr/games/crawl-git-e0b5820336(+0x562aed) [0x5a3358f73aed]: 
/usr/games/crawl-git-e0b5820336(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x5a3358f73ff7]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-e0b5820336(_ZNK9PlaceInfo15assert_validityEv+0xfe) [0x5a335946821e]: PlaceInfo::assert_validity() const
/usr/games/crawl-git-e0b5820336(_ZN6player14set_place_infoE9PlaceInfo+0x12) [0x5a33594685d2]: player::set_place_info(PlaceInfo)
/usr/games/crawl-git-e0b5820336(+0xbf3c6b) [0x5a3359604c6b]: 
/usr/games/crawl-git-e0b5820336(_Z8tag_readR6reader8tag_type+0x170) [0x5a3359623d20]: tag_read(reader&, tag_type)
/usr/games/crawl-git-e0b5820336(+0x66c757) [0x5a335907d757]: 
/usr/games/crawl-git-e0b5820336(+0x66e996) [0x5a335907f996]: 
/usr/games/crawl-git-e0b5820336(_Z12restore_gameRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x23) [0x5a3359080a33]: restore_game(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
/usr/games/crawl-git-e0b5820336(_Z12startup_stepv+0x947) [0x5a33595ce247]: startup_step()
/usr/games/crawl-git-e0b5820336(+0xd4cf4d) [0x5a335975df4d]: 
/usr/games/crawl-git-e0b5820336(main+0x1f7) [0x5a3358e94cf7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x2a1ca) [0x7eb6eb7361ca]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x8b) [0x7eb6eb73628b]: 
/usr/games/crawl-git-e0b5820336(_start+0x25) [0x5a3358e957e5]: