Obtained 26 stack frames.
/usr/games/crawl-js_fixup_vaults(_Z17write_stack_traceP8_IO_FILEi+0x2d) [0xa1ecfc]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-js_fixup_vaults(_Z20crash_signal_handleri+0x23a) [0xa1eabf]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f45427374c0]: 
/usr/games/crawl-js_fixup_vaults(_ZNKSt10unique_ptrI15vault_placementSt14default_deleteIS0_EE3getEv+0x18) [0x9665a4]: std::unique_ptr<vault_placement, std::default_delete<vault_placement> >::get() const
/usr/games/crawl-js_fixup_vaults(_ZNKSt10unique_ptrI15vault_placementSt14default_deleteIS0_EEptEv+0x18) [0xa2eec8]: std::unique_ptr<vault_placement, std::default_delete<vault_placement> >::operator->() const
/usr/games/crawl-js_fixup_vaults(_Z23raw_feature_descriptionRK9coord_def+0x5f) [0xabb63e]: raw_feature_description(coord_def const&)
/usr/games/crawl-js_fixup_vaults() [0xa276c1]
/usr/games/crawl-js_fixup_vaults(_Z13do_crash_dumpv+0x5a9) [0xa29b2a]: do_crash_dump()
/usr/games/crawl-js_fixup_vaults(_Z20crash_signal_handleri+0x2c1) [0xa1eb46]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7f45427374c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7f4542acdb7b]: 
/usr/games/crawl-js_fixup_vaults() [0xa29f14]
/usr/games/crawl-js_fixup_vaults(_Z12AssertFailedPKcS0_iS0_z+0x1f4) [0xa2a10d]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-js_fixup_vaults(_ZNK9PlaceInfo15assert_validityEv+0x57) [0xee8357]: PlaceInfo::assert_validity() const
/usr/games/crawl-js_fixup_vaults(_ZN6player14set_place_infoE9PlaceInfo+0x15) [0xf12b21]: player::set_place_info(PlaceInfo)
/usr/games/crawl-js_fixup_vaults() [0x1050060]
/usr/games/crawl-js_fixup_vaults(_Z8tag_readR6reader8tag_type+0x1ae) [0x1045c54]: tag_read(reader&, tag_type)
/usr/games/crawl-js_fixup_vaults() [0xb3b9c4]
/usr/games/crawl-js_fixup_vaults() [0xb3a198]
/usr/games/crawl-js_fixup_vaults(_Z12restore_gameRKSs+0x19) [0xb3ad50]: restore_game(std::string const&)
/usr/games/crawl-js_fixup_vaults(_Z12startup_stepv+0x19c) [0x10175d1]: startup_step()
/usr/games/crawl-js_fixup_vaults() [0xd068a0]
/usr/games/crawl-js_fixup_vaults() [0xd06769]
/usr/games/crawl-js_fixup_vaults(main+0x172) [0xd06593]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f454272276d]: 
/usr/games/crawl-js_fixup_vaults() [0x939d99]