TestEtcdBank is unstable

[liuzix]

Which jobs are flaking?

leak tests

Which test(s) are flaking?

TestEtcdBank

Jenkins logs or GitHub Actions link

[2021-12-06T09:42:48.849Z] FAIL: etcd_worker_bank_test.go:122: etcdWorkerSuite.TestEtcdBank

[2021-12-06T09:42:48.849Z] 

[2021-12-06T09:42:48.849Z] etcd_worker_bank_test.go:64:

[2021-12-06T09:42:48.849Z]     b.c.Assert(sum, check.Equals, 0, check.Commentf("not ft:%t", b.notFirstTick))

[2021-12-06T09:42:48.849Z] ... obtained int = -23

[2021-12-06T09:42:48.849Z] ... expected int = 0

[2021-12-06T09:42:48.849Z] ... not ft:true

[2021-12-06T09:42:48.849Z] 

[2021-12-06T09:42:48.849Z] etcd_worker_bank_test.go:64:

[2021-12-06T09:42:48.849Z]     b.c.Assert(sum, check.Equals, 0, check.Commentf("not ft:%t", b.notFirstTick))

[2021-12-06T09:42:48.849Z] ... obtained int = -23

[2021-12-06T09:42:48.849Z] ... expected int = 0

[2021-12-06T09:42:48.849Z] ... not ft:true

[2021-12-06T09:42:48.849Z] 

[2021-12-06T09:42:48.849Z] etcd_worker_bank_test.go:64:

[2021-12-06T09:42:48.849Z]     b.c.Assert(sum, check.Equals, 0, check.Commentf("not ft:%t", b.notFirstTick))

[2021-12-06T09:42:48.849Z] ... obtained int = 48

[2021-12-06T09:42:48.849Z] ... expected int = 0

[2021-12-06T09:42:48.849Z] ... not ft:true

[2021-12-06T09:42:48.849Z] 

[2021-12-06T09:42:48.849Z] OOPS: 16 passed, 1 FAILED

[2021-12-06T09:42:48.849Z] --- FAIL: Test (88.69s)```

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