auto adjust code

pkg/filecollector/file_collector.go

@@ -3,6 +3,7 @@ package filecollector
 import (
 	"archive/tar"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"io/fs"
@@ -134,7 +135,7 @@ func (fc *FileCollector) CollectFiles(ctx context.Context, submodulePath []strin
 		if ctx != nil {
 			select {
 			case <-ctx.Done():
-				return fmt.Errorf("copy cancelled")
+				return errors.New("copy cancelled")
 			default:
 			}
 		}

pkg/filecollector/file_collector_test.go

@@ -27,7 +27,7 @@ func (mfs *memoryFs) walk(root string, fn filepath.WalkFunc) error {
 	if err != nil {
 		return err
 	}
-	for i := 0; i < len(dir); i++ {
+	for i := range dir {
 		filename := filepath.Join(root, dir[i].Name())
 		err = fn(filename, dir[i], nil)
 		if dir[i].IsDir() {