diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 9a2ebaa6b..ce6d3e2e6 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -92,8 +92,8 @@ jobs:
 
     - name: Set up Env
       run: |
-        echo "::set-env name=GOPATH::$(go env GOPATH)"
-        echo "::add-path::$(go env GOPATH)/bin"
+        echo "GOPATH=$(go env GOPATH)" >> $GITHUB_ENV
+        echo "$(go env GOPATH)/bin" >> $GITHUB_PATH
   
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
diff --git a/go.mod b/go.mod
index d8c80fc05..8e2f518a7 100644
--- a/go.mod
+++ b/go.mod
@@ -32,6 +32,7 @@ require (
 	github.com/leodido/go-urn v1.1.0 // indirect
 	github.com/mattn/go-colorable v0.1.4 // indirect
 	github.com/mattn/go-isatty v0.0.10 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/montanaflynn/stats v0.5.0
 	github.com/openzipkin/zipkin-go v0.2.1
 	github.com/otokaze/mock v0.0.0-20190125081256-8282b7a7c7c3
diff --git a/go.sum b/go.sum
index d351be9ad..9de294c66 100644
--- a/go.sum
+++ b/go.sum
@@ -465,8 +465,6 @@ google.golang.org/grpc v1.24.0/go.mod h1:XDChyiUovWa60DnaeDeZmSW86xtLtjtZbwvSiRn
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.28.0 h1:bO/TA4OxCOummhSf10siHuG7vJOiwh7SpRpFZDkOgl4=
-google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
 google.golang.org/grpc v1.28.1 h1:C1QC6KzgSiLyBabDi87BbjaGreoRgGUF5nOyvfrAZ1k=
 google.golang.org/grpc v1.28.1/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
diff --git a/pkg/container/pool/list.go b/pkg/container/pool/list.go
index 97e9afc5c..7155953e6 100644
--- a/pkg/container/pool/list.go
+++ b/pkg/container/pool/list.go
@@ -50,7 +50,6 @@ func NewList(c *Config) *List {
 // Reload reload config.
 func (p *List) Reload(c *Config) error {
 	p.mu.Lock()
-	p.startCleanerLocked(time.Duration(c.IdleTimeout))
 	p.conf = c
 	p.mu.Unlock()
 	return nil
diff --git a/pkg/container/pool/slice.go b/pkg/container/pool/slice.go
index 6876565ed..512ece39b 100644
--- a/pkg/container/pool/slice.go
+++ b/pkg/container/pool/slice.go
@@ -61,7 +61,6 @@ func NewSlice(c *Config) *Slice {
 // Reload reload config.
 func (p *Slice) Reload(c *Config) error {
 	p.mu.Lock()
-	p.startCleanerLocked(time.Duration(c.IdleTimeout))
 	p.setActive(c.Active)
 	p.setIdle(c.Idle)
 	p.conf = c
@@ -260,7 +259,6 @@ func (p *Slice) openNewItem(ctx context.Context) {
 //
 // If n <= 0, no idle items are retained.
 func (p *Slice) setIdle(n int) {
-	p.mu.Lock()
 	if n > 0 {
 		p.conf.Idle = n
 	} else {
@@ -278,7 +276,6 @@ func (p *Slice) setIdle(n int) {
 		closing = p.freeItem[maxIdle:]
 		p.freeItem = p.freeItem[:maxIdle]
 	}
-	p.mu.Unlock()
 	for _, c := range closing {
 		c.close()
 	}
@@ -293,13 +290,11 @@ func (p *Slice) setIdle(n int) {
 // If n <= 0, then there is no limit on the number of open items.
 // The default is 0 (unlimited).
 func (p *Slice) setActive(n int) {
-	p.mu.Lock()
 	p.conf.Active = n
 	if n < 0 {
 		p.conf.Active = 0
 	}
 	syncIdle := p.conf.Active > 0 && p.maxIdleItemsLocked() > p.conf.Active
-	p.mu.Unlock()
 	if syncIdle {
 		p.setIdle(n)
 	}