vendor: cadvisor v0.39.0

Main upgrades:
- github.com/opencontainers/runc v1.0.0-rc93
- github.com/containerd/containerd v1.4.4
- github.com/docker/docker v20.10.2
- github.com/mrunalp/fileutils v0.5.0
- github.com/opencontainers/selinux v1.8.0
- github.com/cilium/ebpf v0.2.0

vendor/github.com/sirupsen/logrus/entry.go

@@ -13,7 +13,6 @@ import (
 )
 
 var (
-	bufferPool *sync.Pool
 
 	// qualified package name, cached at first use
 	logrusPackage string
@@ -31,12 +30,6 @@ const (
 )
 
 func init() {
-	bufferPool = &sync.Pool{
-		New: func() interface{} {
-			return new(bytes.Buffer)
-		},
-	}
-
 	// start at the bottom of the stack before the package-name cache is primed
 	minimumCallerDepth = 1
 }
@@ -243,9 +236,12 @@ func (entry Entry) log(level Level, msg string) {
 
 	entry.fireHooks()
 
-	buffer = bufferPool.Get().(*bytes.Buffer)
+	buffer = getBuffer()
+	defer func() {
+		entry.Buffer = nil
+		putBuffer(buffer)
+	}()
 	buffer.Reset()
-	defer bufferPool.Put(buffer)
 	entry.Buffer = buffer
 
 	entry.write()