Describe the issue

When I run the functional test in local, non-deterministic test failure is happening.
Sometimes pass, sometimes fails and when it fails, the failed test case is different every time.

Can you reliably reproduce the issue?

Yes, I can reproduce it in local.

If so, please list the steps to reproduce below:

1. Compile dash in ubuntu
2. sudo ./test/functional/test_runner.py --extended --exclude dbcrash,pruning

Expected behaviour

All tests should be passed.

Actual behaviour

Non-deterministic failure is happening.

What version of Dash Core are you using?

v0.15 branch if Github Repo

Machine specs:

• OS: ubuntu
• CPU: 4
• RAM: 8G
• Disk size: 100G
• Disk Type (HD/SDD): HD

Extra Infos(logs)

TEST | STATUS | DURATION
abandonconflict.py | ✓ Passed | 9 s
addressindex.py | ✓ Passed | 11 s
assumevalid.py | ✓ Passed | 5 s
bip65-cltv-p2p.py | ✓ Passed | 4 s
bip68-112-113-p2p.py | ✓ Passed | 18 s
bip68-sequence.py | ✓ Passed | 14 s
bip9-softforks.py | ✓ Passed | 76 s
bipdersig-p2p.py | ✓ Passed | 4 s
bitcoin_cli.py | ✓ Passed | 1 s
blockchain.py | ✓ Passed | 5 s
decodescript.py | ✓ Passed | 1 s
dip3-deterministicmns.py | ✓ Passed | 42 s
dip4-coinbasemerkleroots.py | ✓ Passed | 39 s
disablewallet.py | ✓ Passed | 2 s
disconnect_ban.py | ✓ Passed | 2 s
example_test.py | ✓ Passed | 1 s
feature_shutdown.py | ✓ Passed | 2 s
forknotify.py | ✓ Passed | 1 s
fundrawtransaction-hd.py | ✓ Passed | 35 s
fundrawtransaction.py | ✓ Passed | 26 s
getblocktemplate_longpoll.py | ✓ Passed | 66 s
getchaintips.py | ✓ Passed | 1 s
httpbasics.py | ✓ Passed | 1 s
import-rescan.py | ✓ Passed | 4 s
importmulti.py | ✓ Passed | 3 s
importprunedfunds.py | ✓ Passed | 1 s
invalidateblock.py | ✓ Passed | 6 s
invalidblockrequest.py | ✓ Passed | 1 s
invalidtxrequest.py | ✓ Passed | 2 s
keypool-hd.py | ✓ Passed | 3 s
keypool-topup.py | ✓ Passed | 4 s
keypool.py | ✓ Passed | 3 s
listsinceblock.py | ✓ Passed | 2 s
listtransactions.py | ✓ Passed | 7 s
llmq-chainlocks.py | ✖ Failed | 43 s
llmq-dkgerrors.py | ✓ Passed | 44 s
llmq-is-cl-conflicts.py | ✓ Passed | 27 s
llmq-is-retroactive.py | ✓ Passed | 119 s
llmq-signing.py | ✓ Passed | 36 s
llmq-simplepose.py | ✓ Passed | 37 s
maxuploadtarget.py | ✓ Passed | 37 s
mempool_limit.py | ✓ Passed | 4 s
mempool_packages.py | ✓ Passed | 8 s
mempool_persist.py | ✓ Passed | 8 s
mempool_reorg.py | ✓ Passed | 2 s
mempool_resurrect_test.py | ✓ Passed | 1 s
mempool_spendcoinbase.py | ✓ Passed | 1 s
merkle_blocks.py | ✓ Passed | 2 s
minchainwork.py | ✓ Passed | 4 s
mining.py | ✓ Passed | 1 s
multi_rpc.py | ✓ Passed | 3 s
multikeysporks.py | ✓ Passed | 14 s
multiwallet.py | ✓ Passed | 3 s
net.py | ✓ Passed | 1 s
nulldummy.py | ✓ Passed | 2 s
p2p-acceptblock.py | ✓ Passed | 3 s
p2p-compactblocks.py | ✓ Passed | 16 s
p2p-fingerprint.py | ✓ Passed | 8 s
p2p-fullblocktest.py | ✓ Passed | 80 s
p2p-instantsend.py | ✓ Passed | 36 s
p2p-leaktests.py | ✓ Passed | 6 s
p2p-mempool.py | ✓ Passed | 1 s
p2p-timeouts.py | ✓ Passed | 63 s
p2p-versionbits-warning.py | ✓ Passed | 8 s
preciousblock.py | ✓ Passed | 1 s
prioritise_transaction.py | ✓ Passed | 3 s
proxy_test.py | ✓ Passed | 1 s
rawtransactions.py | ✓ Passed | 13 s
receivedby.py | ✓ Passed | 10 s
reindex.py | ✓ Passed | 3 s
resendwallettransactions.py | ✓ Passed | 1 s
rest.py | ✓ Passed | 8 s
rpc_getblockstats.py | ✓ Passed | 1 s
rpcbind_test.py | ✓ Passed | 35 s
rpcnamedargs.py | ✓ Passed | 1 s
sendheaders.py | ✓ Passed | 23 s
signmessages.py | ✓ Passed | 1 s
signrawtransactions.py | ✓ Passed | 1 s
smartfees.py | ✓ Passed | 167 s
spentindex.py | ✓ Passed | 8 s
sporks.py | ✓ Passed | 8 s
timestampindex.py | ✓ Passed | 4 s
txindex.py | ✓ Passed | 4 s
txn_clone.py | ✓ Passed | 2 s
txn_clone.py --mineblock | ✓ Passed | 1 s
txn_doublespend.py | ✓ Passed | 2 s
txn_doublespend.py --mineblock | ✓ Passed | 2 s
uptime.py | ✓ Passed | 1 s
wallet-accounts.py | ✓ Passed | 3 s
wallet-dump.py | ✓ Passed | 19 s
wallet-encryption.py | ✓ Passed | 7 s
wallet-hd.py | ✓ Passed | 22 s
wallet.py | ✓ Passed | 25 s
walletbackup.py | ✓ Passed | 125 s
zapwallettxes.py | ✓ Passed | 3 s
zmq_test.py | ✓ Passed | 3 s
ALL | ✖ Failed | 1528 s (accumulated)
Runtime: 392 s
(python-virtualenv) me@me:~/Documents/dash$