Obtained 20 stack frames.
/usr/games/crawl-git-b3750974ac(_Z17write_stack_traceP8_IO_FILEi+0x23) [0x67c1c3]: write_stack_trace(_IO_FILE*, int)
/usr/games/crawl-git-b3750974ac(_Z20crash_signal_handleri+0x1c9) [0x67c599]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x351c0) [0x7fd17e6801c0]: 
/usr/games/crawl-git-b3750974ac(_Z23raw_feature_descriptionRK9coord_def+0x49) [0x6eaff9]: raw_feature_description(coord_def const&)
/usr/games/crawl-git-b3750974ac(_Z13do_crash_dumpv+0xd62) [0x686212]: do_crash_dump()
/usr/games/crawl-git-b3750974ac(_Z20crash_signal_handleri+0x74) [0x67c444]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x351c0) [0x7fd17e6801c0]: 
/lib/x86_64-linux-gnu/libpthread.so.0(raise+0x2b) [0x7fd17ea0579b]: 
/usr/games/crawl-git-b3750974ac() [0x684fa4]
/usr/games/crawl-git-b3750974ac(_Z3diePKciS0_z+0) [0x685280]: die(char const*, int, char const*, ...)
/usr/games/crawl-git-b3750974ac() [0xb543f2]
/usr/games/crawl-git-b3750974ac() [0xb5744c]
/usr/games/crawl-git-b3750974ac(_Z8tag_readR6reader8tag_type+0x645) [0xb5d105]: tag_read(reader&, tag_type)
/usr/games/crawl-git-b3750974ac() [0x7438ed]
/usr/games/crawl-git-b3750974ac(_Z10load_level20dungeon_feature_type14load_mode_typeRK8level_id+0x2269) [0x74ea99]: load_level(dungeon_feature_type, load_mode_type, level_id const&)
/usr/games/crawl-git-b3750974ac(_Z12startup_stepv+0xe5a) [0xb298ea]: startup_step()
/usr/games/crawl-git-b3750974ac() [0xc33339]
/usr/games/crawl-git-b3750974ac(main+0x2ef) [0x5df1df]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fd17e66cb45]: 
/usr/games/crawl-git-b3750974ac() [0x5df94a]