format failed to report a stuck cache

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#  RUN PARAMETERS

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abort=0

alter=0

auto_throttle=1

backups=0

bitcnt=8

bloom=1

bloom_bit_count=22

bloom_hash_count=12

bloom_oldest=0

cache=4

checkpoints=on

checkpoint_log_size=196

checkpoint_wait=36

checksum=uncompressed

chunk_size=9

compaction=0

compression=zlib

data_extend=0

data_source=file

delete_pct=1

dictionary=0

direct_io=0

encryption=none

evict_max=5

file_type=row-store

firstfit=1

huffman_key=0

huffman_value=0

independent_thread_rng=1

in_memory=0

insert_pct=0

internal_key_truncation=1

internal_page_max=9

isolation=random

key_gap=20

key_max=256

key_min=256

leaf_page_max=9

leak_memory=0

logging=0

logging_archive=0

logging_compression=none

logging_file_max=226896

logging_prealloc=0

long_running_txn=0

lsm_worker_threads=4

merge_max=8

mmap=0

modify_pct=17

ops=100000

prefix_compression=1

prefix_compression_min=4

quiet=1

read_pct=81

rebalance=1

repeat_data_pct=0

reverse=0

rows=100000

runs=1

salvage=1

split_pct=51

statistics=0

statistics_server=0

threads=3

timer=360

transaction_timestamps=1

transaction-frequency=40

value_max=2927

value_min=256

verify=1

wiredtiger_config=

write_pct=1

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