Obtained 26 stack frames.
/usr/games/crawl-vaulted(_Z17write_stack_traceP8_IO_FILEi+0x2d) [0xafd61c]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-vaulted(_Z20crash_signal_handleri+0x23a) [0xafd3df]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f78d4aec4c0]: 
/usr/games/crawl-vaulted(_ZNKSt10unique_ptrI15vault_placementSt14default_deleteIS0_EE3getEv+0x18) [0xa3a0a0]: std::unique_ptr<vault_placement, std::default_delete<vault_placement> >::get() const
/usr/games/crawl-vaulted(_ZNKSt10unique_ptrI15vault_placementSt14default_deleteIS0_EEptEv+0x18) [0xb0c1b8]: std::unique_ptr<vault_placement, std::default_delete<vault_placement> >::operator->() const
/usr/games/crawl-vaulted(_Z23raw_feature_descriptionRK9coord_def+0x5f) [0xbc3697]: raw_feature_description(coord_def const&)
/usr/games/crawl-vaulted() [0xb0568d]
/usr/games/crawl-vaulted(_Z13do_crash_dumpv+0x5a9) [0xb07af4]: do_crash_dump()
/usr/games/crawl-vaulted(_Z20crash_signal_handleri+0x2c1) [0xafd466]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f78d4aec4c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f78d4e82b7b]: 
/usr/games/crawl-vaulted() [0xb07ede]
/usr/games/crawl-vaulted(_Z12AssertFailedPKcS0_iS0_z+0x1f4) [0xb080d7]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-vaulted(_ZNK9PlaceInfo15assert_validityEv+0x57) [0x101fc7b]: PlaceInfo::assert_validity() const
/usr/games/crawl-vaulted(_ZN6player14set_place_infoE9PlaceInfo+0x15) [0x1049de5]: player::set_place_info(PlaceInfo)
/usr/games/crawl-vaulted() [0x119334a]
/usr/games/crawl-vaulted(_Z8tag_readR6reader8tag_type+0x1ae) [0x11884f7]: tag_read(reader&, tag_type)
/usr/games/crawl-vaulted() [0xc498a0]
/usr/games/crawl-vaulted() [0xc4806e]
/usr/games/crawl-vaulted(_Z12restore_gameRKSs+0x19) [0xc48c26]: restore_game(std::string const&)
/usr/games/crawl-vaulted(_Z12startup_stepv+0x18d) [0x115c5df]: startup_step()
/usr/games/crawl-vaulted() [0x1302515]
/usr/games/crawl-vaulted() [0x13023d7]
/usr/games/crawl-vaulted(main+0x172) [0x1302201]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f78d4ad776d]: 
/usr/games/crawl-vaulted() [0xa09c99]