+ eval nice ./t
++ nice ./t
[1561963227:513183][5073:0x7f0e8e2cd700], t, file:wt, WT_CURSOR.update: __check_upd_list, 1424: birthmark_count <= 1
[1561963227:513237][5073:0x7f0e8e2cd700], t, file:wt, WT_CURSOR.update: __wt_abort, 30: aborting WiredTiger library
/tmp/jenkins3345424513419158618.sh: line 37:  5073 Aborted                 (core dumped) nice ./t 

(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f0e97ccd801 in __GI_abort () at abort.c:79
#2  0x0000000000655854 in __wt_abort (session=0x7f0e99319260) at ../src/os_common/os_abort.c:32
#3  0x00000000008ea7a6 in __check_upd_list (session=0x7f0e99319260, upd=0x0) at ../src/btree/bt_split.c:1424
#4  0x00000000008e7ef0 in __split_multi_inmem (session=0x7f0e99319260, orig=0x60f00082cb10, multi=0x6190030bb0e8, ref=0x60e00000a760)
    at ../src/btree/bt_split.c:1524
#5  0x00000000008e696e in __wt_multi_to_ref (session=0x7f0e99319260, page=0x60f00082cb10, multi=0x6190030bb0e8, refp=0x6020000fcbf8,
    incrp=0x7f0e8e2c7e60, closing=false) at ../src/btree/bt_split.c:1732
#6  0x0000000000907741 in __split_multi (session=0x7f0e99319260, ref=0x60e00063e340, closing=false) at ../src/btree/bt_split.c:2159
#7  0x00000000008e8f6a in __split_multi_lock (session=0x7f0e99319260, ref=0x60e00063e340, closing=0) at ../src/btree/bt_split.c:2206
#8  0x00000000008e8da9 in __wt_split_multi (session=0x7f0e99319260, ref=0x60e00063e340, closing=0) at ../src/btree/bt_split.c:2234
#9  0x0000000000610049 in __evict_page_dirty_update (session=0x7f0e99319260, ref=0x60e00063e340, evict_flags=0) at ../src/evict/evict_page.c:408
#10 0x000000000060bd9f in __wt_evict (session=0x7f0e99319260, ref=0x60e00063e340, previous_state=5, flags=0) at ../src/evict/evict_page.c:226
#11 0x00000000005edee4 in __evict_page (session=0x7f0e99319260, is_server=false) at ../src/evict/evict_lru.c:2352
#12 0x00000000005eab71 in __wt_cache_eviction_worker (session=0x7f0e99319260, busy=false, readonly=false, pct_full=100.00640616692931)
    at ../src/evict/evict_lru.c:2447
#13 0x0000000000849671 in __wt_cache_eviction_check (session=0x7f0e99319260, busy=false, readonly=false, didworkp=0x0) at ../src/include/cache.i:453
#14 0x0000000000848cd9 in __cursor_enter (session=0x7f0e99319260) at ../src/include/cursor.i:152
#15 0x0000000000837219 in __cursor_func_init (cbt=0x6180001c8480, reenter=true) at ../src/include/cursor.i:357
#16 0x0000000000840292 in __btcur_update (cbt=0x6180001c8480, value=0x6180001c85a8, modify_type=4) at ../src/btree/bt_cursor.c:1286
#17 0x0000000000841dc7 in __wt_btcur_update (cbt=0x6180001c8480) at ../src/btree/bt_cursor.c:1582
#18 0x0000000000a0194e in __curfile_update (cursor=0x6180001c8480) at ../src/cursor/cur_file.c:366
#19 0x000000000052fa0b in row_update (tinfo=0x61300007b9c0, cursor=0x6180001c8480, positioned=false) at ../../../test/format/ops.c:1757
#20 0x0000000000527b34 in ops (arg=0x61300007b9c0) at ../../../test/format/ops.c:1009
#21 0x00000000004e8e4f in __asan::AsanThread::ThreadStart(unsigned long, __sanitizer::atomic_uintptr_t*) ()
#22 0x00007f0e98c7c6db in start_thread (arg=0x7f0e8e2cd700) at pthread_create.c:463
#23 0x00007f0e97dae88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 

############################################
#  RUN PARAMETERS
############################################
abort=0
alter=0
auto_throttle=1
backups=1
bitcnt=7
bloom=1
bloom_bit_count=60
bloom_hash_count=12
bloom_oldest=0
cache=136
cache_minimum=0
checkpoints=on
checkpoint_log_size=54
checkpoint_wait=60
checksum=uncompressed
chunk_size=4
compaction=0
compression=snappy
data_extend=0
data_source=file
delete_pct=0
dictionary=0
direct_io=0
encryption=none
evict_max=2
file_type=row-store
firstfit=0
huffman_key=0
huffman_value=0
independent_thread_rng=1
in_memory=0
insert_pct=6
internal_key_truncation=1
internal_page_max=10
isolation=snapshot
key_gap=15
key_max=72
key_min=26
leaf_page_max=11
leak_memory=0
logging=1
logging_archive=1
logging_compression=none
logging_file_max=434471
logging_prealloc=0
long_running_txn=0
lsm_worker_threads=4
memory_page_max=4
merge_max=18
mmap=1
modify_pct=92
ops=100000
prefix_compression=0
prefix_compression_min=3
prepare=0
quiet=1
read_pct=0
rebalance=1
repeat_data_pct=6
reverse=0
rows=100000
runs=1
salvage=1
split_pct=54
statistics=1
statistics_server=0
threads=17
timer=360
timing_stress_checkpoint=0
timing_stress_lookaside_sweep=0
timing_stress_split_1=0
timing_stress_split_2=0
timing_stress_split_3=0
timing_stress_split_4=0
timing_stress_split_5=0
timing_stress_split_6=0
timing_stress_split_7=0
timing_stress_split_8=0
transaction_timestamps=1
transaction-frequency=21
truncate=1
value_max=2603
value_min=18
verify=1
wiredtiger_config=
write_pct=2
############################################