file:wt.wt, WT_SESSION.checkpoint: __rec_txn_read, 1350: upd->type != WT_UPDATE_BIRTHMARK
file:wt.wt, WT_SESSION.checkpoint: aborting WiredTiger library

Backtrace:
/lib64/libc.so.6(gsignal+0x40)[0x3ff84640a78]
/lib64/libc.so.6(abort+0x128)[0x3ff84642300]
??:?(__wt_abort)[0x80063056]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/support/err.c:501(__wt_assert)[0x800ba282]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/reconcile/rec_write.c:1351(__rec_txn_read)[0x8008360a]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/reconcile/rec_write.c:5382(__rec_row_leaf)[0x8008da76]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/reconcile/rec_write.c:474(__wt_reconcile)[0x80080fb4]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/evict/evict_page.c:597(__evict_review)[0x8004ebb0]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/evict/evict_page.c:144(__wt_evict)[0x8004d79e]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/evict/evict_page.c:85(__wt_page_release_evict)[0x8004d298]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_sync.c:298(__sync_file)[0x80132df2]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/btree/bt_sync.c:401(__wt_cache_op)[0x801332be]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:1564(__checkpoint_tree)[0x800d9df4]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:1688(__checkpoint_tree_helper)[0x800da270]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:217(__checkpoint_apply)[0x800d62d4]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:861(__txn_checkpoint)[0x800d7e66]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:1036(__txn_checkpoint_wrapper)[0x800d889a]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/txn/txn_ckpt.c:1100 (discriminator 2)(__wt_txn_checkpoint)[0x800d8a6a]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/session/session_api.c:1703(__session_checkpoint)[0x800b27e4]
/mnt/workspace/wiredtiger-test-format-stress-zseries/build_posix/../src/conn/conn_ckpt.c:116(__ckpt_server)[0x8015db28]
/lib64/libpthread.so.0(+0x81f2)[0x3ff849881f2]
/lib64/libc.so.6(+0x1098da)[0x3ff847098da]

############################################
#  RUN PARAMETERS
############################################
abort=0
alter=0
auto_throttle=1
backups=0
bitcnt=7
bloom=1
bloom_bit_count=9
bloom_hash_count=14
bloom_oldest=0
cache=59
cache_minimum=20
checkpoints=wiredtiger
checkpoint_log_size=49
checkpoint_wait=25
checksum=uncompressed
chunk_size=9
compaction=0
compression=lz4-noraw
data_extend=0
data_source=table
delete_pct=12
dictionary=0
direct_io=0
encryption=none
evict_max=3
file_type=row-store
firstfit=1
huffman_key=0
huffman_value=0
independent_thread_rng=1
in_memory=0
insert_pct=28
internal_key_truncation=1
internal_page_max=16
isolation=read-committed
key_gap=19
key_max=63
key_min=24
leaf_page_max=14
leak_memory=0
logging=0
logging_archive=1
logging_compression=none
logging_file_max=85520
logging_prealloc=1
long_running_txn=0
lsm_worker_threads=4
merge_max=12
mmap=1
modify_pct=53
ops=100000
prefix_compression=1
prefix_compression_min=8
quiet=1
read_pct=5
rebalance=1
repeat_data_pct=30
reverse=0
rows=100000
runs=100
salvage=1
split_pct=70
statistics=0
statistics_server=0
threads=16
timer=360
transaction_timestamps=1
transaction-frequency=1
value_max=3621
value_min=17
verify=1
wiredtiger_config=
write_pct=2
############################################

#0  0x000003ff84640a78 in raise () from /lib64/libc.so.6
#1  0x000003ff84642300 in abort () from /lib64/libc.so.6
#2  0x0000000080063056 in __wt_abort (session=0x9236d5d0)
    at ../src/os_common/os_abort.c:31
#3  0x00000000800ba282 in __wt_assert (session=0x9236d5d0, error=0, 
    file_name=0x8021d7da <__func__.14016> "__rec_txn_read", line_number=1350, 
    fmt=0x8021ca70 "%s") at ../src/support/err.c:501
#4  0x000000008008360a in __rec_txn_read (session=0x9236d5d0, r=0x3ff547341c0, 
    ins=0x0, ripcip=0x3ff547fd250, vpack=0x3ff6d7fe168, upd_savedp=0x0, 
    updp=0x3ff6d7fe148) at ../src/reconcile/rec_write.c:1350
#5  0x000000008008da76 in __rec_row_leaf (session=0x9236d5d0, r=0x3ff547341c0, 
    page=0x3ff547fd100, salvage=0x0) at ../src/reconcile/rec_write.c:5382
#6  0x0000000080080fb4 in __wt_reconcile (session=0x9236d5d0, ref=0x9248fa80, 
    salvage=0x0, flags=10, lookaside_retryp=0x0)
    at ../src/reconcile/rec_write.c:474
#7  0x000000008004ebb0 in __evict_review (session=0x9236d5d0, ref=0x9248fa80, 
    closing=false, inmem_splitp=0x3ff6d7fe55d) at ../src/evict/evict_page.c:597
#8  0x000000008004d79e in __wt_evict (session=0x9236d5d0, ref=0x9248fa80, 
    closing=false) at ../src/evict/evict_page.c:144
#9  0x000000008004d298 in __wt_page_release_evict (session=0x9236d5d0, 
    ref=0x9248fa80) at ../src/evict/evict_page.c:85
#10 0x0000000080132df2 in __sync_file (session=0x9236d5d0, 
    syncop=WT_SYNC_CHECKPOINT) at ../src/btree/bt_sync.c:298
#11 0x00000000801332be in __wt_cache_op (session=0x9236d5d0, 
    op=WT_SYNC_CHECKPOINT) at ../src/btree/bt_sync.c:401
#12 0x00000000800d9df4 in __checkpoint_tree (session=0x9236d5d0, 
    is_checkpoint=true, cfg=0x3ff6d7feed8) at ../src/txn/txn_ckpt.c:1564
#13 0x00000000800da270 in __checkpoint_tree_helper (session=0x9236d5d0, 
    cfg=0x3ff6d7feed8) at ../src/txn/txn_ckpt.c:1688
#14 0x00000000800d62d4 in __checkpoint_apply (session=0x9236d5d0, 
    cfg=0x3ff6d7feed8, op=0x800da1c0 <__checkpoint_tree_helper>)
    at ../src/txn/txn_ckpt.c:217
#15 0x00000000800d7e66 in __txn_checkpoint (session=0x9236d5d0, 
    cfg=0x3ff6d7feed8) at ../src/txn/txn_ckpt.c:861
#16 0x00000000800d889a in __txn_checkpoint_wrapper (session=0x9236d5d0, 
    cfg=0x3ff6d7feed8) at ../src/txn/txn_ckpt.c:1036
#17 0x00000000800d8a6a in __wt_txn_checkpoint (session=0x9236d5d0, 
    cfg=0x3ff6d7feed8, waiting=true) at ../src/txn/txn_ckpt.c:1100
#18 0x00000000800b27e4 in __session_checkpoint (wt_session=0x9236d5d0, 
    config=0x0) at ../src/session/session_api.c:1703
#19 0x000000008015db28 in __ckpt_server (arg=0x9236d5d0)
    at ../src/conn/conn_ckpt.c:116