feat: replace github.com/pkg/errors to errors

Signed-off-by: haoyun <yun.hao@daocloud.io>
Co-authored-by: zounengren <zouyee1989@gmail.com>

pkg/cri/server/container_stats_list.go

@@ -17,9 +17,10 @@
 package server
 
 import (
+	"fmt"
+
 	tasks "github.com/containerd/containerd/api/services/tasks/v1"
 	"github.com/containerd/containerd/api/types"
-	"github.com/pkg/errors"
 	"golang.org/x/net/context"
 	runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
 
@@ -33,15 +34,15 @@ func (c *criService) ListContainerStats(
 ) (*runtime.ListContainerStatsResponse, error) {
 	request, containers, err := c.buildTaskMetricsRequest(in)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to build metrics request")
+		return nil, fmt.Errorf("failed to build metrics request: %w", err)
 	}
 	resp, err := c.client.TaskService().Metrics(ctx, &request)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to fetch metrics for tasks")
+		return nil, fmt.Errorf("failed to fetch metrics for tasks: %w", err)
 	}
 	criStats, err := c.toCRIContainerStats(resp.Metrics, containers)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to convert to cri containerd stats format")
+		return nil, fmt.Errorf("failed to convert to cri containerd stats format: %w", err)
 	}
 	return criStats, nil
 }
@@ -58,7 +59,7 @@ func (c *criService) toCRIContainerStats(
 	for _, cntr := range containers {
 		cs, err := c.containerMetrics(cntr.Metadata, statsMap[cntr.ID])
 		if err != nil {
-			return nil, errors.Wrapf(err, "failed to decode container metrics for %q", cntr.ID)
+			return nil, fmt.Errorf("failed to decode container metrics for %q: %w", cntr.ID, err)
 		}
 		containerStats.Stats = append(containerStats.Stats, cs)
 	}