diff --git a/azure/public.go b/azure/public.go
index 8a4809ef..057e469e 100644
--- a/azure/public.go
+++ b/azure/public.go
@@ -16,8 +16,6 @@ import (
 
 // PublishedStorage abstract file system with published files (actually hosted on Azure)
 type PublishedStorage struct {
-	container azblob.ContainerURL
-	prefix    string
 	az        *azContext
 	pathCache map[string]map[string]string
 }
@@ -185,7 +183,7 @@ func (storage *PublishedStorage) internalCopyOrMoveBlob(src, dst string, metadat
 	if err != nil || leaseResp.StatusCode() != http.StatusCreated {
 		return fmt.Errorf("error acquiring lease on source blob %s", srcBlobURL)
 	}
-	defer srcBlobURL.BreakLease(context.Background(), azblob.LeaseBreakNaturally, azblob.ModifiedAccessConditions{})
+	defer func() { _, _ = srcBlobURL.BreakLease(context.Background(), azblob.LeaseBreakNaturally, azblob.ModifiedAccessConditions{}) }()
 	srcBlobLeaseID := leaseResp.LeaseID()
 
 	copyResp, err := dstBlobURL.StartCopyFromURL(