++ ./t -1 -q -c ../../../test/format/CONFIG.stress checkpoints=1 isolation=random leak_memory=0 mmap=1 transaction_timestamps=1 file_type=row alter=1 backups=1 compaction=1 data_extend=1 prepare=1 rebalance=1 salvage=1 statistics=1 statistics_server=1 verify=1
[1557718772:902207][29246:0x7fec91ff3700], t, WT_SESSION.timestamp_transaction: __wt_txn_set_commit_timestamp, 676: setting a commit_timestamp requires a transaction running at snapshot isolation: Invalid argument
t: process 29246 

(...)

t: FAILED: commit_transaction/640: session->timestamp_transaction(session, buf): Invalid argument
process aborting
/tmp/jenkins781389346636444815.sh: line 10: 29246 Aborted                 (core dumped) ./t -1 -q -c ../../../test/format/CONFIG.stress checkpoints=1 isolation=random leak_memory=0 mmap=1 transaction_timestamps=1 file_type=row alter=1 backups=1 compaction=1 data_extend=1 prepare=1 rebalance=1 salvage=1 statistics=1 statistics_server=1 verify=1
Build step 'Execute shell' marked build as failure

############################################
#  RUN PARAMETERS
############################################
abort=0
alter=1
auto_throttle=1
backups=1
bitcnt=8
bloom=1
bloom_bit_count=56
bloom_hash_count=18
bloom_oldest=0
cache=240
cache_minimum=20
checkpoints=1
checkpoint_log_size=181
checkpoint_wait=73
checksum=uncompressed
chunk_size=4
compaction=1
compression=none
data_extend=1
data_source=table
delete_pct=2
dictionary=0
direct_io=0
encryption=none
evict_max=0
file_type=row-store
firstfit=0
huffman_key=0
huffman_value=0
independent_thread_rng=1
in_memory=0
insert_pct=97
internal_key_truncation=1
internal_page_max=16
isolation=random
key_gap=16
key_max=60
key_min=20
leaf_page_max=14
leak_memory=0
logging=0
logging_archive=0
logging_compression=none
logging_file_max=258058
logging_prealloc=1
long_running_txn=0
lsm_worker_threads=4
memory_page_max=6
merge_max=7
mmap=1
modify_pct=0
ops=0
prefix_compression=1
prefix_compression_min=4
prepare=1
quiet=1
read_pct=0
rebalance=1
repeat_data_pct=40
reverse=0
rows=1000000
runs=1
salvage=1
split_pct=79
statistics=1
statistics_server=1
threads=20
timer=4
timing_stress_aggressive_sweep=0
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=100
truncate=1
value_max=3759
value_min=16
verify=1
wiredtiger_config=
write_pct=1
############################################