ERROR in 'mon-util.cc' at line 3192: bogus mc (no monster data): invalid monster_type 1000 (1000)

Version: Dungeon Crawl Stone Soup 0.34-a0-1647-gb1ee126873
Platform: unix
Bits: 64
Game mode: normal
Tiles: online

Seed: 16661065366271426805, deterministic pregen: 1
Version history:
Game started: 0.34-a0-1629-g29b25b21a2
0.34-a0-1647-gb1ee126873

Command line: /usr/games/crawl-git-b1ee126873 -name Mitchellthefish -rc /dgldir/rcfiles/crawl-git/Mitchellthefish.rc -macro /dgldir/rcfiles/crawl-git/Mitchellthefish.macro -morgue /dgldir/morgue/Mitchellthefish/ -webtiles-socket /crawl-master/webserver/sockets/Mitchellthefish:2025-12-07.00:46:53.sock -await-connection

RC options:
restart_after_game = false


Crash caused by signal #6: Aborted

Obtained 25 stack frames.
/usr/games/crawl-git-b1ee126873(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x5ba5e7d5b98e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-b1ee126873(_Z13do_crash_dumpv+0x43a) [0x5ba5e7d69bca]: do_crash_dump()
/usr/games/crawl-git-b1ee126873(_Z20crash_signal_handleri+0x1fa) [0x5ba5e7d5be6a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x7e3855442910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x7e385549999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7e3855442866]: 
/usr/games/crawl-git-b1ee126873(+0x4f3f9d) [0x5ba5e7d68f9d]: 
/usr/games/crawl-git-b1ee126873(_Z3diePKciS0_z+0x166) [0x5ba5e7d69616]: die(char const*, int, char const*, ...)
/usr/games/crawl-git-b1ee126873(_Z16mons_class_intel12monster_type+0xa3) [0x5ba5e81a0963]: mons_class_intel(monster_type)
/usr/games/crawl-git-b1ee126873(_Z19mons_tracking_rangePK7monster+0x14) [0x5ba5e816c664]: mons_tracking_range(monster const*)
/usr/games/crawl-git-b1ee126873(_Z18mons_is_irrelevantPK7monster+0x87) [0x5ba5e81ea707]: mons_is_irrelevant(monster const*)
/usr/games/crawl-git-b1ee126873(_Z12mons_is_safePK7monsterbbb+0x162) [0x5ba5e81ea912]: mons_is_safe(monster const*, bool, bool, bool)
/usr/games/crawl-git-b1ee126873(_Z19notice_new_monstersRSt6vectorIP7monsterSaIS1_EES4_17seen_context_type+0x14f) [0x5ba5e824e08f]: notice_new_monsters(std::vector<monster*, std::allocator<monster*> >&, std::vector<monster*, std::allocator<monster*> >&, seen_context_type)
/usr/games/crawl-git-b1ee126873(_Z23update_monsters_in_viewv+0x1c5) [0x5ba5e824e535]: update_monsters_in_view()
/usr/games/crawl-git-b1ee126873(_ZN6player17finalise_movementEPK5actor+0x45c) [0x5ba5e82726dc]: player::finalise_movement(actor const*)
/usr/games/crawl-git-b1ee126873(_Z16floor_transition20dungeon_feature_typeS_8level_idbbbb+0xdd2) [0x5ba5e83930a2]: floor_transition(dungeon_feature_type, dungeon_feature_type, level_id, bool, bool, bool, bool)
/usr/games/crawl-git-b1ee126873(_Z11take_stairs20dungeon_feature_typebbb+0xb9) [0x5ba5e8394ea9]: take_stairs(dungeon_feature_type, bool, bool, bool)
/usr/games/crawl-git-b1ee126873(_ZN5Delay6handleEv+0x46) [0x5ba5e7d872d6]: Delay::handle()
/usr/games/crawl-git-b1ee126873(_Z12handle_delayv+0x39) [0x5ba5e7d86d59]: handle_delay()
/usr/games/crawl-git-b1ee126873(+0xc9a9e5) [0x5ba5e850f9e5]: 
/usr/games/crawl-git-b1ee126873(+0xc9b3f5) [0x5ba5e85103f5]: 
/usr/games/crawl-git-b1ee126873(main+0x1f7) [0x5ba5e7c8ef77]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x7e38554280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7e3855428189]: 
/usr/games/crawl-git-b1ee126873(_start+0x25) [0x5ba5e7c8fa65]: 

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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007e385550fbf7 in __GI___wait4 (pid=3384832, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
#0  0x00007e385550fbf7 in __GI___wait4 (pid=3384832, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
        sc_ret = -512
        sc_ret = <optimized out>
#1  0x00005ba5e7d5c03c in call_gdb (file=0x7e38555ff6c0 <_IO_2_1_stderr_>) at crash.cc:438
        gdb = <optimized out>
        attach_cmd = "attach 3383074\000\000\000\000\000"
#2  0x00005ba5e7d69be8 in do_crash_dump () at dbg-asrt.cc:673
        t = 1765070411
        dir = "/dgldir/morgue/Mitchellthefish/"
        name = "/dgldir/morgue/Mitchellthefish/crash-Mitchellthefish-20251207-012011.txt", '\000' <repeats 107 times>
        signal_info = "Crash caused by signal #6: Aborted"
        cause_msg = "ERROR in 'mon-util.cc' at line 3192: bogus mc (no monster data): invalid monster_type 1000 (1000)"
        file = 0x7e38555ff6c0 <_IO_2_1_stderr_>
#3  0x00005ba5e7d5be6a in crash_signal_handler (sig_num=6) at crash.cc:198
No locals.
#4  <signal handler called>
No locals.
#5  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
        tid = <optimized out>
        ret = 0
        pd = <optimized out>
        old_mask = {__val = {140724499506352}}
        ret = <optimized out>
        pd = <optimized out>
        old_mask = <optimized out>
        ret = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        __private = <optimized out>
        __oldval = <optimized out>
#6  __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
No locals.
#7  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
No locals.
#8  0x00007e3855442866 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#9  0x00005ba5e7d68f9d in _BreakStrToDebugger (mesg=mesg@entry=0x7ffcf9cdecb0 "ERROR in 'mon-util.cc' at line 3192: bogus mc (no monster data): invalid monster_type 1000 (1000)", assert=false) at dbg-asrt.cc:799
No locals.
#10 0x00005ba5e7d69616 in die (file=file@entry=0x5ba5e856b489 "mon-util.cc", line=line@entry=3192, format=format@entry=0x5ba5e85e6110 "bogus mc (no monster data): %s (%d)") at dbg-asrt.cc:859
        tmp = "bogus mc (no monster data): invalid monster_type 1000 (1000)", '\000' <repeats 1987 times>
        mesg = "ERROR in 'mon-util.cc' at line 3192: bogus mc (no monster data): invalid monster_type 1000 (1000)", '\000' <repeats 1973 times>
        args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffcf9cdf5b0, reg_save_area = 0x7ffcf9cdf4d0}}
#11 0x00005ba5e81a0963 in mons_class_intel (mc=MONS_NO_MONSTER) at /usr/include/c++/13/bits/basic_string.h:222
No locals.
#12 0x00005ba5e816c664 in mons_tracking_range (mon=mon@entry=0x5ba5e8b50ab0 <env+256464>) at mon-pathfind.cc:38
        range = 0
#13 0x00005ba5e81ea707 in mons_is_irrelevant (mon=mon@entry=0x5ba5e8b50ab0 <env+256464>) at nearby-danger.cc:76
        mp = <error reading variable mp (value of type `monster_pathfind' requires 201664 bytes, which is more than max-value-size)>
        range = <optimized out>
#14 0x00005ba5e81ea912 in mons_is_safe (mon=mon@entry=0x5ba5e8b50ab0 <env+256464>, want_move=want_move@entry=false, consider_user_options=consider_user_options@entry=true, check_dist=check_dist@entry=true) at nearby-danger.cc:120
        dist = 43
        is_safe = <optimized out>
#15 0x00005ba5e824e08f in _try_seen_interrupt (sc=SC_NEWLY_SEEN, mons=...) at player-notices.cc:50
        aid =