cdc: unstable unit test

[pingyu]

Bug Report

1. Describe the bug

2. Minimal reproduce step (Required)

CI (make unit_test_in_verify_ci).

3. What did you see instead (Required)

CI (make unit_test_in_verify_ci) succeed.

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

CI (make unit_test_in_verify_ci) succeed. failed.
https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true

cd cdc/
  make unit_test_in_verify_ci
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
  env:
    GOROOT: /opt/hostedtoolcache/go/1.18.[3](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:3)/x6[4](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:4)
fatal: No names found, cannot describe anything.
cd tools/check && GO111MODULE=on go build -mod=mod -o ../bin/failpoint-ctl github.com/pingcap/failpoint/failpoint-ctl
go: downloading github.com/pingcap/failpoint v0.0.0-20210316064728-7acb0f0a3dfd
go: downloading github.com/sergi/go-diff v1.1.0
cd tools/check && GO111MODULE=on go build -mod=mod -o ../bin/gotestsum gotest.tools/gotestsum
go: downloading gotest.tools/gotestsum v1.8.1
go: downloading github.com/fatih/color v1.10.0
go: downloading github.com/dnephin/pflag v1.0.7
go: downloading github.com/google/shlex v0.0.0-201912021004[5](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:5)8-e7afc7fbc510
go: downloading github.com/pkg/errors v0.9.1
go: downloading golang.org/x/tools v0.1.1
go: downloading github.com/mattn/go-colorable v0.1.8
go: downloading github.com/mattn/go-isatty v0.0.14
go: downloading github.com/fsnotify/fsnotify v1.4.9
go: downloading golang.org/x/sys v0.0.0-2021121[6](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:6)021012-1d35b9e2eb4e
go: downloading github.com/jonboulle/clockwork v0.2.2
go: downloading golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
go: downloading golang.org/x/term v0.0.0-2021092[7](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:8)222741-03fcf44c2211
go: downloading golang.org/x/xerrors v0.0.0-20200[8](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:9)04184101-5ec[9](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:10)9f83aff1
go: downloading golang.org/x/mod v0.4.2
GO111MODULE=on go install github.com/axw/gocov/gocov@latest
go: downloading github.com/axw/gocov v1.1.0
go: downloading golang.org/x/tools v0.0.0-20190617190820-da514acc4774
GO111MODULE=on go install github.com/AlekSi/gocov-xml@latest
go: downloading github.com/AlekSi/gocov-xml v1.1.0
mkdir -p "/tmp/tikv_cdc_test.6PFS8gsq"
$(echo $(for p in $(go list github.com/tikv/migration/cdc/... | grep -vE 'vendor|proto|cdc\/tests|integration|testing_utils|pb|pbmock'); do echo ${p#"github.com/tikv/migration/cdc/"}|grep -v "github.com/tikv/migration/cdc/"; done) | xargs tools/bin/failpoint-ctl enable >/dev/null)
go: downloading github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
go: downloading github.com/swaggo/swag v1.8.2
go: downloading github.com/gin-gonic/gin v1.7.7
go: downloading github.com/google/uuid v1.1.2
go: downloading github.com/pingcap/errors v0.11.5-0.20211224045212-9687c2b0f87c
go: downloading github.com/pingcap/failpoint v0.0.0-20220423142525-ae43b7f4e5c3
go: downloading github.com/pingcap/log v1.1.0
go: downloading github.com/pingcap/tidb v1.1.0-beta.0.20220528045048-5495dc6c4360
go: downloading github.com/r3labs/diff v1.1.0
go: downloading github.com/pingyu/client-go/v2 v2.0.0-alpha.0.20220609033944-46f14fcc9ba7
go: downloading github.com/tikv/pd/client v0.0.0-20220307081149-841fa61e97[10](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:11)
go: downloading go.etcd.io/etcd/client/v3 v3.5.4
go: downloading github.com/tikv/pd v1.1.0-beta.0.20220303060546-3695d8164800
go: downloading go.etcd.io/etcd/server/v3 v3.5.4
go: downloading go.uber.org/zap v1.21.0
go: downloading golang.org/x/time v0.0.0-202204[11](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:12)224347-583f2d630306
go: downloading github.com/prometheus/client_golang v1.[12](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:13).2
go: downloading github.com/swaggo/files v0.0.0-20210815190702-a29dd2bc99b2
go: downloading github.com/swaggo/gin-swagger v1.4.3
go: downloading go.etcd.io/etcd/client/pkg/v3 v3.5.4
go: downloading golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
go: downloading google.golang.org/grpc v1.46.2
go: downloading github.com/tinylib/msgp v1.1.6
go: downloading github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
go: downloading github.com/pingcap/kvproto v0.0.0-20220525022339-6aaebf466305
go: downloading github.com/stretchr/testify v1.7.2
go: downloading github.com/edwingeng/deque v0.0.0-20191220032[13](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:14)1-8596380dee17
go: downloading github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
go: downloading github.com/twmb/murmur3 v1.1.3
go: downloading github.com/spf13/cobra v1.4.0
go: downloading github.com/fatih/color v1.13.0
go: downloading github.com/spf13/pflag v1.0.5
go: downloading github.com/BurntSushi/toml v1.1.0
go: downloading golang.org/x/net v0.0.0-20220607020251-c690dde0001d
go: downloading github.com/chzyer/readline v1.5.0
go: downloading github.com/mattn/go-shellwords v1.0.12
go: downloading github.com/pingcap/tidb-tools v6.0.1-0.20220516050036-b3ea358e374a+incompatible
go: downloading github.com/cockroachdb/pebble v0.0.0-20211124172904-3ca75111760c
go: downloading github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954
go: downloading github.com/benbjohnson/clock v1.1.0
go: downloading go.etcd.io/etcd/api/v3 v3.5.4
go: downloading github.com/Shopify/sarama v1.34.1
go: downloading go.uber.org/goleak v1.1.12
go: downloading github.com/pingcap/check v0.0.0-20211026125417-57bd13f7b5f0
go: downloading github.com/google/btree v1.0.1
go: downloading github.com/xdg/scram v1.0.5
go: downloading github.com/soheilhy/cmux v0.1.5
go: downloading go.uber.org/atomic v1.9.0
go: downloading github.com/coreos/go-semver v0.3.0
go: downloading github.com/golang/protobuf v1.5.2
go: downloading github.com/gogo/protobuf v1.3.2
go: downloading github.com/go-sql-driver/mysql v1.6.0
go: downloading github.com/bradleyjkemp/grpc-tools v0.2.5
go: downloading github.com/pingcap/tidb/parser v0.0.0-20220528045048-5495dc6c4360
go: downloading github.com/cenkalti/backoff v2.2.1+incompatible
go: downloading github.com/jmoiron/sqlx v1.3.5
go: downloading upper.io/db.v3 v3.7.1+incompatible
go: downloading github.com/integralist/go-findroot v0.0.0-201605181[14](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:15)804-ac9068[15](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:16)25dc
go: downloading github.com/KyleBanks/depth v1.2.1
go: downloading github.com/go-openapi/jsonreference v0.20.0
go: downloading github.com/go-openapi/spec v0.20.6
go: downloading golang.org/x/tools v0.1.10
go: downloading github.com/gin-contrib/sse v0.1.0
go: downloading gopkg.in/natefinch/lumberjack.v2 v2.0.0
go: downloading github.com/coocood/freecache v1.2.1
go: downloading github.com/pingcap/tipb v0.0.0-20220314125451-bfb5c2c55188
go: downloading github.com/opentracing/opentracing-go v1.2.0
go: downloading go.etcd.io/etcd/pkg/v3 v3.5.4
go: downloading go.uber.org/multierr v1.8.0
go: downloading github.com/prometheus/client_model v0.2.0
go: downloading github.com/prometheus/common v0.32.1
go: downloading github.com/beorn7/perks v1.0.1
go: downloading github.com/cespare/xxhash/v2 v2.1.2
go: downloading github.com/prometheus/procfs v0.7.3
go: downloading google.golang.org/protobuf v1.27.1
go: downloading github.com/coreos/go-systemd/v22 v22.3.2
go: downloading github.com/philhofer/fwd v1.1.1
go: downloading github.com/uber/jaeger-client-go v2.22.1+incompatible
go: downloading google.golang.org/genproto v0.0.0-202202[16](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:17)160803-4663080d8bc8
go: downloading github.com/shirou/gopsutil/v3 v3.22.5
go: downloading github.com/mattn/go-colorable v0.1.12
go: downloading github.com/cockroachdb/errors v1.8.1
go: downloading github.com/cockroachdb/redact v1.0.8
go: downloading github.com/cakturk/go-netstat v0.0.0-20200220111822-e5b49efee7a5
go: downloading github.com/grpc-ecosystem/grpc-gateway v1.16.0
go: downloading github.com/tmc/grpc-websocket-proxy v0.0.0-20220101234140-673ab2c3ae75
go: downloading go.etcd.io/bbolt v1.3.6
go: downloading go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0
go: downloading go.opentelemetry.io/contrib v0.20.0
go: downloading go.opentelemetry.io/otel/exporters/otlp v0.20.0
go: downloading go.opentelemetry.io/otel v0.20.0
go: downloading go.opentelemetry.io/otel/sdk v0.20.0
go: downloading golang.org/x/crypto v0.0.0-20220214200702-86341886e292
go: downloading sigs.k8s.io/yaml v1.2.0
go: downloading github.com/xdg/stringprep v1.0.3
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading github.com/eapache/go-resiliency v1.2.0
go: downloading github.com/eapache/go-xerial-snappy v0.0.0-20180814[17](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:18)4437-776d5712da21
go: downloading github.com/eapache/queue v1.1.0
go: downloading github.com/hashicorp/go-multierror v1.1.1
go: downloading github.com/jcmturner/gofork v1.0.0
go: downloading github.com/jcmturner/gokrb5/v8 v8.4.2
go: downloading github.com/klauspost/compress v1.15.6
go: downloading github.com/pierrec/lz4/v4 v4.1.14
go: downloading github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
go: downloading github.com/improbable-eng/grpc-web v0.13.0
go: downloading github.com/sirupsen/logrus v1.8.1
go: downloading github.com/go-openapi/jsonpointer v0.19.5
go: downloading github.com/go-openapi/swag v0.21.1
go: downloading github.com/go-playground/validator/v10 v10.9.0
go: downloading github.com/ugorji/go/codec v1.2.6
go: downloading gopkg.in/yaml.v2 v2.4.0
go: downloading golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a
go: downloading github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
go: downloading github.com/cznic/mathutil v0.0.0-20[18](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:19)1122101859-297441e03548
go: downloading github.com/stathat/consistent v1.0.0
go: downloading github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13
go: downloading github.com/dustin/go-humanize v1.0.0
go: downloading github.com/matttproud/golang_protobuf_extensions v1.0.1
go: downloading github.com/dgraph-io/ristretto v0.1.1-0.20220403145359-8e850b710d6d
go: downloading github.com/uber/jaeger-lib v2.4.1+incompatible
go: downloading github.com/pmezard/go-difflib v1.0.0
go: downloading gopkg.in/yaml.v3 v3.0.1
go: downloading golang.org/x/text v0.3.7
go: downloading github.com/cockroachdb/logtags v0.0.0-20[19](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:20)0617123548-eb05cc24525f
go: downloading github.com/cockroachdb/sentry-go v0.6.1-cockroachdb.2
go: downloading golang.org/x/exp v0.0.0-[20](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:21)220426173459-3bcf042a4bf5
go: downloading github.com/DataDog/zstd v1.4.6-0.20[21](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:22)0211175136-c6db21d202f4
go: downloading github.com/golang/snappy v0.0.4
go: downloading github.com/gorilla/websocket v1.4.2
go: downloading go.etcd.io/etcd/raft/v3 v3.5.4
go: downloading github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2
go: downloading github.com/jonboulle/clockwork v0.3.0
go: downloading go.opentelemetry.io/otel/trace v0.20.0
go: downloading go.opentelemetry.io/otel/metric v0.20.0
go: downloading go.opentelemetry.io/otel/sdk/export/metric v0.20.0
go: downloading go.opentelemetry.io/otel/sdk/metric v0.20.0
go: downloading go.opentelemetry.io/proto/otlp v0.7.0
go: downloading github.com/hashicorp/errwrap v1.0.0
go: downloading github.com/jcmturner/dnsutils/v2 v2.0.0
go: downloading github.com/hashicorp/go-uuid v1.0.2
go: downloading github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f
go: downloading github.com/rs/cors v1.7.0
go: downloading github.com/ngaut/pools v0.0.0-20180318154953-b7bc8c42aac7
go: downloading github.com/mailru/easyjson v0.7.7
go: downloading github.com/go-playground/universal-translator v0.18.0
go: downloading github.com/leodido/go-urn v1.2.1
go: downloading github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0
go: downloading github.com/gorilla/mux v1.8.0
go: downloading github.com/kr/pretty v0.3.0
go: downloading github.com/form3tech-oss/jwt-go v3.2.5+incompatible
go: downloading go.etcd.io/etcd/client/v2 v2.305.4
go: downloading github.com/danjacques/gofslock v0.0.0-20191023191349-0a45f885bc37
go: downloading github.com/opentracing/basictracer-go v1.0.0
go: downloading github.com/jcmturner/rpc/v2 v2.0.3
go: downloading github.com/ngaut/sync2 v0.0.0-20141008032647-7a24ed77b2ef
go: downloading github.com/cznic/sortutil v0.0.0-201811[22](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:23)101858-f5f958428db8
go: downloading github.com/josharian/intern v1.0.0
go: downloading github.com/go-playground/locales v0.14.0
go: downloading github.com/golang/glog v1.0.0
go: downloading github.com/pingcap/sysutil v0.0.0-20220114020952-ea68d2dbf5b4
go: downloading sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0
go: downloading github.com/iancoleman/strcase v0.2.0
go: downloading github.com/kr/text v0.2.0
go: downloading github.com/rogpeppe/go-internal v1.8.0
go: downloading github.com/json-iterator/go v1.1.12
go: downloading github.com/modern-go/reflect2 v1.0.2
go: downloading github.com/jcmturner/aescts/v2 v2.0.0
go: downloading github.com/google/pprof v0.0.0-20220520215854-d04f2422c8a1
go: downloading github.com/wangjohn/quickselect v0.0.0-20161129[23](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:24)0411-ed8402a42d5f
go: downloading golang.org/x/term v0.0.0-20220526004731-065cf7ba[24](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:25)67
go: downloading cloud.google.com/go/storage v1.21.0
go: downloading cloud.google.com/go v0.100.2
go: downloading github.com/Azure/azure-sdk-for-go/sdk/azidentity v0.12.0
go: downloading github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v0.2.0
go: downloading github.com/aliyun/alibaba-cloud-sdk-go v1.61.1581
go: downloading github.com/aws/aws-sdk-go v1.35.3
go: downloading golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8
go: downloading google.golang.org/api v0.69.0
go: downloading github.com/docker/go-units v0.4.0
go: downloading github.com/tklauser/go-sysconf v0.3.10
go: downloading github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
go: downloading cloud.google.com/go/compute v1.2.0
go: downloading cloud.google.com/go/iam v0.1.1
go: downloading github.com/googleapis/gax-go/v2 v2.1.1
go: downloading golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df
go: downloading github.com/Azure/azure-sdk-for-go/sdk/azcore v0.20.0
go: downloading github.com/Azure/azure-sdk-for-go/sdk/internal v0.8.1
go: downloading github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
go: downloading github.com/cheggaaa/pb/v3 v3.0.8
go: downloading github.com/tklauser/numcpus v0.4.0
go: downloading go.opencensus.io v0.23.0
go: downloading github.com/jmespath/go-jmespath v0.4.0
go: downloading github.com/VividCortex/ewma v1.1.1
go: downloading github.com/mattn/go-runewidth v0.0.13
go: downloading github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
go: downloading github.com/rivo/uniseg v0.2.0
go: downloading github.com/google/go-cmp v0.5.8
go: downloading github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
go: downloading github.com/stretchr/objx v0.4.0
go: downloading github.com/pingcap/goleveldb v0.0.0-20191226122134-f82aafb29989
go: downloading github.com/pingcap/badger v1.5.1-0.2022031416[25](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:26)37-ab58fbf40580
go: downloading github.com/ncw/directio v1.0.5
go: downloading github.com/coocood/rtutil v0.0.0-20190304133409-c84515f646f2
go: downloading github.com/coocood/bbloom v0.0.0-20190830030839-58deb6228d64
go: downloading github.com/klauspost/cpuid v1.3.1
∅  api
✓  cdc/capture (485ms) (coverage: 4.0% of statements)
✓  cdc/model (396ms) (coverage: 68.9% of statements)
✓  cdc/owner (3.396s) (coverage: 68.8% of statements)
✓  cdc (8.991s) (coverage: 47.8% of statements)
✓  cdc/processor (412ms) (coverage: 72.4% of statements)
✓  cdc/processor/pipeline (428ms) (coverage: 42.6% of statements)
✓  cdc/puller (494ms) (coverage: 84.0% of statements)
✓  cdc/scheduler (337ms) (coverage: 87.6% of statements)
✓  cdc/scheduler/util (160ms) (coverage: 90.3% of statements)
✓  cdc/sink (853ms) (coverage: 68.6% of statements)
∅  cdc/sink/common (23ms) (coverage: 0.0% of statements)
✓  cdc/puller/frontier (1m10.061s) (coverage: 92.7% of statements)
✓  cdc/kv (2m34.121s) (coverage: 74.5% of statements)
∅  cdc/sorter
∅  cdc/sorter/encoding
✓  cmd/cdc (608ms) (coverage: 100.0% of statements)
✓  pkg/api/internal/rest (2.235s) (coverage: 80.3% of statements)
✓  pkg/cmd/cli (862ms) (coverage: 23.6% of statements)
✓  pkg/cmd/server (1.335s) (coverage: 62.5% of statements)
✓  pkg/cmd/util (315ms) (coverage: 58.7% of statements)
✓  pkg/config (285ms) (coverage: 71.7% of statements)
✓  pkg/context (1.613s) (coverage: 64.3% of statements)
✓  pkg/db (369ms) (coverage: 87.7% of statements)
✓  pkg/errors (40ms) (coverage: 92.9% of statements)
✓  pkg/etcd (8.984s) (coverage: 66.6% of statements)
✓  pkg/flags (61ms) (coverage: 100.0% of statements)
✓  pkg/fsutil (67ms) (coverage: 84.2% of statements)
✓  pkg/hash (36ms) (coverage: 90.0% of statements)
✓  pkg/httputil (181ms) (coverage: 90.0% of statements)
✓  pkg/leakutil (49ms) (coverage: 100.0% of statements)
✓  pkg/logutil (59ms) (coverage: 60.8% of statements)
✓  pkg/notify (5.735s) (coverage: 93.9% of statements)
✓  cdc/sorter/memory (4m12.661s) (coverage: 65.8% of statements)
✓  pkg/orchestrator/util (63ms) (coverage: 100.0% of statements)
✓  pkg/pdtime (1.517s) (coverage: 65.6% of statements)
✓  pkg/pipeline (1.627s) (coverage: 72.0% of statements)
✓  pkg/quotes (56ms) (coverage: 100.0% of statements)
✓  pkg/regionspan (470ms) (coverage: 80.1% of statements)
✓  pkg/retry (1.499s) (coverage: 96.1% of statements)
✓  cdc/sorter/unified (4m16.317s) (coverage: 80.6% of statements)
∅  pkg/api/v1 (4ms)
∅  pkg/cmd (2ms)
∅  pkg/cmd/context
∅  pkg/cmd/factory
∅  pkg/cmd/version
∅  pkg/config/outdated
∅  pkg/kafka
✓  pkg/scheduler (3[26](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:27)ms) (coverage: 79.6% of statements)
✓  pkg/security (101ms) (coverage: 13.8% of statements)
✖  pkg/tcpserver (10.29s) (coverage: 87.0% of statements)
✓  pkg/types ([28](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:29)ms) (coverage: 91.7% of statements)
✓  pkg/txnutil/gc (2.654s) (coverage: 72.9% of statements)
✓  pkg/version (535ms) (coverage: 80.0% of statements)
✓  pkg/util (586ms) (coverage: 77.4% of statements)
✓  pkg/workerpool (23.87s) (coverage: 92.4% of statements)
✓  pkg/orchestrator (2m10.05s) (coverage: 86.3% of statements)
∅  pkg/txnutil
∅  pkg/util/testleak

=== Failed
=== FAIL: pkg/tcpserver TestTcpServerClose (0.00s)
    tcp_server_test.go:[34](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:35)2: 
        	Error Trace:	tcp_server_test.go:3[42](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:43)
        	            				asm_amd64.s:1571
        	Error:      	Expect "mux: listener closed" to match ".*mux: server closed.*"
        	Test:       	TestTcpServerClose

DONE 226 tests, 1 failure in 712.[48](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:49)4s
make: *** [Makefile:[119](https://github.com/tikv/migration/runs/7953564868?check_suite_focus=true#step:4:120): unit_test_in_verify_ci] Error 1
Error: Process completed with exit code 2.

5. What is your migration tool and TiKV version? (Required)

• TiKV:
• TiKV CDC:
• TiKV BR:
• TiKV Online Bulk Load:

[github-actions]

This issue is stale because it has been open 30 days with no activity.