ASSERT(!invalid_monster(&mons)) in 'mon-death.cc' at line 2343 failed.

Version: Dungeon Crawl Stone Soup 0.34-a0-315-g0cc2c75a63
Platform: unix
Bits: 64
Game mode: sprint
Tiles: online

Seed: 6517195257105736844, deterministic pregen: 1
Command line: /usr/games/crawl-git-0cc2c75a63 -name Paler -rc /dgldir/rcfiles/crawl-git/Paler.rc -macro /dgldir/rcfiles/crawl-git/Paler.macro -morgue /dgldir/morgue/Paler/ -sprint -webtiles-socket /crawl-master/webserver/sockets/Paler:2025-07-07.18:08:56.sock -await-connection

RC options:
restart_after_game = false


Crash caused by signal #6: Aborted

Obtained 19 stack frames.
/usr/games/crawl-git-0cc2c75a63(_Z17write_stack_traceP8_IO_FILE+0x3e) [0x57073ed9687e]: write_stack_trace(_IO_FILE*)
/usr/games/crawl-git-0cc2c75a63(_Z13do_crash_dumpv+0x43a) [0x57073eda495a]: do_crash_dump()
/usr/games/crawl-git-0cc2c75a63(_Z20crash_signal_handleri+0x1fa) [0x57073ed96d5a]: crash_signal_handler(int)
/lib/x86_64-linux-gnu/libc.so.6(+0x42910) [0x780db1c42910]: 
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x11b) [0x780db1c9999b]: 
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x780db1c42866]: 
/usr/games/crawl-git-0cc2c75a63(+0x4e1d2d) [0x57073eda3d2d]: 
/usr/games/crawl-git-0cc2c75a63(_Z12AssertFailedPKcS0_iS0_z+0x1c7) [0x57073eda4237]: AssertFailed(char const*, char const*, int, char const*, ...)
/usr/games/crawl-git-0cc2c75a63(_Z11monster_dieR7monster11killer_typeibb+0x41bd) [0x57073f165a7d]: monster_die(monster&, killer_type, int, bool, bool)
/usr/games/crawl-git-0cc2c75a63(+0x851858) [0x57073f113858]: 
/usr/games/crawl-git-0cc2c75a63(_Z19handle_monster_moveP7monster+0x1f41) [0x57073f116891]: handle_monster_move(monster*)
/usr/games/crawl-git-0cc2c75a63(_Z15handle_monstersb+0xbf0) [0x57073f117e70]: handle_monsters(bool)
/usr/games/crawl-git-0cc2c75a63(_Z12world_reactsv+0x147) [0x57073f539f57]: world_reacts()
/usr/games/crawl-git-0cc2c75a63(+0xc7a489) [0x57073f53c489]: 
/usr/games/crawl-git-0cc2c75a63(+0xc7afb5) [0x57073f53cfb5]: 
/usr/games/crawl-git-0cc2c75a63(main+0x1f7) [0x57073eccb8a7]: 
/lib/x86_64-linux-gnu/libc.so.6(+0x280d0) [0x780db1c280d0]: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x780db1c28189]: 
/usr/games/crawl-git-0cc2c75a63(_start+0x25) [0x57073eccc2f5]: 

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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x0000780db1d0fbf7 in __GI___wait4 (pid=353221, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
#0  0x0000780db1d0fbf7 in __GI___wait4 (pid=353221, stat_loc=0x0, options=0, usage=0x0) at ../sysdeps/unix/sysv/linux/wait4.c:30
        sc_ret = -512
        sc_ret = <optimized out>
#1  0x000057073ed96f2c in call_gdb (file=0x780db1dff6c0 <_IO_2_1_stderr_>) at crash.cc:438
        gdb = <optimized out>
        attach_cmd = "attach 353193\000\000\000\000\000\000"
#2  0x000057073eda4978 in do_crash_dump () at dbg-asrt.cc:673
        t = 1751911850
        dir = "/dgldir/morgue/Paler/"
        name = "/dgldir/morgue/Paler/crash-Paler-20250707-181050.txt", '\000' <repeats 127 times>
        signal_info = "Crash caused by signal #6: Aborted"
        cause_msg = "ASSERT(!invalid_monster(&mons)) in 'mon-death.cc' at line 2343 failed."
        file = 0x780db1dff6c0 <_IO_2_1_stderr_>
#3  0x000057073ed96d5a 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 = {2343}}
        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  0x0000780db1c42866 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#9  0x000057073eda3d2d in _BreakStrToDebugger (mesg=mesg@entry=0x7ffef8c9d190 "ASSERT(!invalid_monster(&mons)) in 'mon-death.cc' at line 2343 failed.", assert=true) at dbg-asrt.cc:799
No locals.
#10 0x000057073eda4237 in AssertFailed (expr=expr@entry=0x57073f56e7d8 "!invalid_monster(&mons)", file=file@entry=0x57073f56e2a9 "mon-death.cc", line=line@entry=2343, text=text@entry=0x0) at dbg-asrt.cc:837
        mesg = "ASSERT(!invalid_monster(&mons)) in 'mon-death.cc' at line 2343 failed.\000\000E\270&?\aW\000\000\220\322\311\370\376\177\000\000\240\355\253?\001\000\000\000\000\322\311\370\376\177", '\000' <repeats 26 times>, "\020\220\360>\aW\000\000\350\305\373>\aW", '\000' <repeats 11 times>, "\t\033\330S'\362s@\323\311\370\376\177\000\000\000\t\033\330S'\362s@\323\311\370\376\177\000\000\000\t\033\330S'\362s`YIA\aW\000\000"...
        args = {{gp_offset = 2987095532, fp_offset = 30733, overflow_arg_area = 0x0, reg_save_area = 0x0}}
        fileName = <optimized out>
#11 0x000057073f165a7d in monster_die (mons=..., killer=KILL_RESET, killer_index=27000, silent=true, mount_death=<optimized out>) at mon-death.cc:2343
        was_visible = <optimized out>
        spectralised = <optimized out>
        summoned = <optimized out>
        duration = <optimized out>
        monster_killed = <optimized out>
        hard_reset = <optimized out>
        timeout = <optimized out>
        gives_player_xp = <optimized out>
        drop_items = <optimized out>
        in_transit = <optimized out>
        was_banished = <optimized out>
        mons_reset = <optimized out>
        leaves_corpse = <optimized out>
        real_death = <optimized out>
        pet_kill = <optimized out>
        did_death_message = <optimized out>
        death_message = <optimized out>
        exploded = <optimized out>
        anon = <optimized out>
        targ_holy = <optimized out>
        destroyed = <optimized out>
        corpse_consumed = <optimized out>
        corpse = <optimized out>
        player_xp = <optimized out>
        mwhere = {x = 2, y = 0}
#12 0x000057073f113858 in _monster_swaps_places (delta=..., mon=0x57073fb3c1c8 <env+257704>) at mon-act.cc:3603
        m2 = 0x57073fb3bb28 <env+256008>
        m2 = <optimized out>
#13 _monster_move (mons=<optimized out>, delta=...) at mon-act.cc:4087
        targ = 0x57073fb3bb28 <env+256008>
        good_move = {mData = {mData = {{mData = {true, true, true}}, {mData = {true, true, true}}, {mData = {true, true, true}}}}}
        habitat = <optimized out>
        deep_water_available = <optimized out>
        newpos = <optimized out>
        feat = <optimized out>
        burrows = <optimized out>
        flattens_trees = <optimized out>
        digs = false
        ret = <optimized out>
#14 0x000057073f116891 in handle_monster_move (mons=0x57073fb3c1c8 <env+257704>) at mon-act.cc:2422
        targ = <optimized out>
        entry = <optimized out>
        mmov = {x = 0, y = -1}
        disabled = <optimized out>
        old_energy = <optimized out>
        non_move_energy = <optimized out>
        old_pos = <optimized out>
        new_pos = {x = 42, y = 43}
#15 0x000057073f117e70 in handle_monsters (with_noise=true) at mon-act.cc:2789
        mon = 0x57073fb3c1c8 <env+257704>
        oldspeed = <optimized out>
        tries = <optimized out>
#16 0x000057073f539f57 in world_reacts () at main.cc:2604
No locals.
#17 0x000057073f53c489 in _input () at main.cc:1304
        player_disabled = {was_disabled = false}
#18 0x000057073f53cfb5 in _launch_game () at main.cc:493
        game_start = <optimized out>
        ccon = {cstate = false}
#19 0x000057073eccb8a7 in _launch_game_loop () at main.cc:392
        game_ended = false
        game_ended = <optimized out>
        ge = <optimized out>
        fe = <optimized out>
#20 main (argc=13, argv=0x7ffef8c9f128) at main.cc:342
        echo = {prev_state = {value = maybe_bool::mbool_t::maybe, static maybe =