lint: fix linting issues

libbeat/common/schema/mapstrstr/mapstrstr_test.go

@@ -18,6 +18,7 @@
 package mapstrstr
 
 import (
+	"errors"
 	"testing"
 	"time"
 
@@ -126,7 +127,8 @@ func TestKeyInErrors(t *testing.T) {
 		_, errs := c.Schema.ApplyTo(mapstr.M{}, c.Input)
 		assert.NotEmpty(t, errs, c.Description)
 		if assert.Equal(t, 1, len(errs), c.Description) {
-			keyErr, ok := errs[0].(s.KeyError)
+			var keyErr s.KeyError
+			ok := errors.As(errs[0], &keyErr)
 			if assert.True(t, ok, c.Description) {
 				assert.Equal(t, c.Expected, keyErr.Key(), c.Description)
 			}

winlogbeat/module/pipeline.go

@@ -207,6 +207,7 @@ func applyTemplates(prefix string, version string, filename string, original []b
 		if err != nil {
 			return nil, fmt.Errorf("failed to sanitize the YAML pipeline file: %s: %w", filename, err)
 		}
+		//nolint:errcheck // ignore
 		content = newContent.(map[string]interface{})
 	default:
 		return nil, fmt.Errorf("unsupported extension '%s' for pipeline file: %s", extension, filename)

x-pack/auditbeat/module/system/socket/helper/loopback.go

@@ -108,6 +108,7 @@ func (lo *IPv6Loopback) AddRandomAddress() (addr net.IP, err error) {
 		if err = unix.Bind(fd, &bindAddr); err == nil {
 			break
 		}
+		//nolint:errcheck // ignore
 		if errno, ok := err.(unix.Errno); !ok || errno != unix.EADDRNOTAVAIL {
 			break
 		}

x-pack/auditbeat/module/system/socket/state.go

@@ -308,6 +308,7 @@ func (dt *dnsTracker) AddTransaction(tr dns.Transaction) {
 	}
 	var list []dns.Transaction
 	if prev := dt.transactionByClient.Get(clientAddr); prev != nil {
+		//nolint:errorlint // ignore
 		list = prev.([]dns.Transaction)
 	}
 	list = append(list, tr)
@@ -331,6 +332,7 @@ func (dt *dnsTracker) RegisterEndpoint(addr net.UDPAddr, proc *process) {
 	key := addr.String()
 	dt.processByClient.Put(key, proc)
 	if listIf := dt.transactionByClient.Get(key); listIf != nil {
+		//nolint:errorlint // ignore
 		list := listIf.([]dns.Transaction)
 		for _, tr := range list {
 			proc.addTransaction(tr)

x-pack/libbeat/management/managerV2.go

@@ -684,6 +684,7 @@ func (cm *BeatV2Manager) reload(units map[unitKey]*agentUnit) {
 		// reloadInputs wraps the multierror so we have to call Unwrap
 		wr := errors.Unwrap(err)
 
+		//nolint:errcheck // ignore
 		if u, ok := wr.(interface {
 			Unwrap() []error
 		}); ok {