$ gdb --args python3 ../test/suite/run.py -v 2 --hook disagg test_prepare20.py      
...
Thread 1 "python3" received signal SIGABRT, Aborted.
0x0000fffff769f200 in ?? () from /lib/aarch64-linux-gnu/libc.so.6
(gdb) bt
#0  0x0000fffff769f200 in ?? () from /lib/aarch64-linux-gnu/libc.so.6
#1  0x0000fffff765a67c in raise () from /lib/aarch64-linux-gnu/libc.so.6
#2  0x0000fffff7647130 in abort () from /lib/aarch64-linux-gnu/libc.so.6
#3  0x0000fffff6bdaeac in __wt_abort (session=0x8200b0) at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/os_common/os_abort.c:31
#4  0x0000fffff6c5e3b4 in __rec_hs_cursor_pos (session=0x8200b0, hs_cursor=0x20911b0, btree_id=32, key=0x7fba40, ts=23, upd_tw=0xffffffffa698, 
    non_ts_updates=0xffffffffa10a) at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_hs.c:347
#5  0x0000fffff6c5ed00 in __rec_hs_insert_record (session=0x8200b0, cursor=0x20911b0, btree=0xa9e660, key=0x7fba40, type=3 '\003', hs_value=0x815030, 
    tw=0xffffffffa698, error_on_ts_ordering=false) at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_hs.c:514
#6  0x0000fffff6c60d68 in __wti_rec_hs_insert_updates (session=0x8200b0, r=0x2081a10, multi=0x2090130)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_hs.c:1111
#7  0x0000fffff6c5a684 in __rec_hs_wrapup (session=0x8200b0, r=0x2081a10)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_write.c:3479
#8  0x0000fffff6c58cb8 in __rec_write_wrapup (session=0x8200b0, r=0x2081a10)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_write.c:3151
#9  0x0000fffff6c4f060 in __reconcile (session=0x8200b0, ref=0x4c35c0, salvage=0x0, flags=132, page_lockedp=0xffffffffbdc0)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_write.c:363
#10 0x0000fffff6c4ddf0 in __wt_reconcile (session=0x8200b0, ref=0x4c35c0, salvage=0x0, flags=132)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/reconcile/rec_write.c:124
#11 0x0000fffff6a29f04 in __wt_sync_file (session=0x8200b0, syncop=WT_SYNC_CHECKPOINT)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/btree/bt_sync.c:364
#12 0x0000fffff6a8611c in __checkpoint_tree (session=0x8200b0, is_checkpoint=true, cfg=0xffffffffd320)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:2547
#13 0x0000fffff6a8687c in __checkpoint_tree_helper (session=0x8200b0, cfg=0xffffffffd320)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:2685
#14 0x0000fffff6a7f620 in __checkpoint_apply_to_dhandles (session=0x8200b0, cfg=0xffffffffd320, op=0xfffff6a8678c <__checkpoint_tree_helper>)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:340
#15 0x0000fffff6a825d8 in __checkpoint_db_internal (session=0x8200b0, cfg=0xffffffffd320)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:1343
#16 0x0000fffff6a83b30 in __checkpoint_db_wrapper (session=0x8200b0, cfg=0xffffffffd320)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:1721
#17 0x0000fffff6a83e08 in __wt_checkpoint_db (session=0x8200b0, cfg=0xffffffffd320, waiting=true)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/checkpoint/checkpoint_txn.c:1800
#18 0x0000fffff6ca1aa4 in __session_checkpoint (wt_session=0x8200b0, config=0x956f90 "")
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/src/session/session_api.c:2363
#19 0x0000fffff6ee998c in _wrap_Session_checkpoint (self=0xfffff70f8d60, args=0xfffff65aeb40)
    at /home/dda/wt/git/wt-15262-python-tests-stability-triage/build/lang/python/CMakeFiles/wiredtiger_python.dir/wiredtigerPYTHON_wrap.c:7585
#20 0x0000fffff79a06fc in cfunction_call (func=0xfffff713a7a0, args=<optimized out>, kwargs=<optimized out>)
    at ../src/Python-3.10.4/Objects/methodobject.c:552