panic in the TestStateSyncerSimple

[hawkingrei]

Bug Report

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1. Minimal reproduce step (Required)

2. What did you expect to see? (Required)

3. What did you see instead (Required)

 === RUN   TestSyncerSimple
[2023/05/18 02:53:25.758 +08:00] [INFO] [manager.go:178] ["start campaign owner"] [ownerInfo="[ddl] /tidb/ddl/fg/owner"]
panic: Fail in goroutine after TestStateSyncerSimple has completed
goroutine 292 [running]:
testing.(*common).Fail(0xc00066eea0)
	GOROOT/src/testing/testing.go:933 +0x1a8
testing.(*common).Errorf(0xc00066eea0, {0x4021df6, 0x3}, {0xc000a13500, 0x1, 0x1})
	GOROOT/src/testing/testing.go:1050 +0xaf
github.com/stretchr/testify/assert.Fail({0x7f8c2edc1bd8, 0xc00066eea0}, {0xc000dc6240, 0x225}, {0x0, 0x0, 0x0})
	external/com_github_stretchr_testify/assert/assertions.go:262 +0x412
github.com/stretchr/testify/assert.NoError({0x7f8c2edc1bd8, 0xc00066eea0}, {0x588d3e0, 0xc000139578}, {0x0, 0x0, 0x0})
	external/com_github_stretchr_testify/assert/assertions.go:1380 +0x127
github.com/stretchr/testify/require.NoError({0x589ad80, 0xc00066eea0}, {0x588d3e0, 0xc000139578}, {0x0, 0x0, 0x0})
	external/com_github_stretchr_testify/require/require.go:1261 +0xa5
ddl/syncer/syncer_test_test.TestStateSyncerSimple.func3()
	ddl/syncer/state_syncer_test.go:66 +0x74
created by ddl/syncer/syncer_test_test.TestStateSyncerSimple
	ddl/syncer/state_syncer_test.go:65 +0x6aa 

4. What is your TiDB version? (Required)

[hawkingrei]

https://prow.hawkingrei.com/view/gs/prowpingcap/logs/tidb_race/1658894806018953216