clientv3/integration: fix args format in Errorf/Printf

clientv3/integration/lease_test.go

@@ -66,7 +66,7 @@ func TestLeaseRevoke(t *testing.T) {
 
 	_, err = lapi.Revoke(context.Background(), lease.LeaseID(resp.ID))
 	if err != nil {
-		t.Errorf("failed to revoke lease", err)
+		t.Errorf("failed to revoke lease %v", err)
 	}
 
 	_, err = kv.Put("foo", "bar", lease.LeaseID(resp.ID))
@@ -91,7 +91,7 @@ func TestLeaseKeepAliveOnce(t *testing.T) {
 
 	_, err = lapi.KeepAliveOnce(context.Background(), lease.LeaseID(resp.ID))
 	if err != nil {
-		t.Errorf("failed to keepalive lease", err)
+		t.Errorf("failed to keepalive lease %v", err)
 	}
 }
 

etcdctlv3/command/member_command.go

@@ -114,7 +114,7 @@ func memberAddCommandFunc(cmd *cobra.Command, args []string) {
 		ExitWithError(ExitError, err)
 	}
 
-	fmt.Printf("Member %16x added to cluster %16x\n", args[0], resp.Member.ID, resp.Header.ClusterId)
+	fmt.Printf("Member %16x added to cluster %16x\n", resp.Member.ID, resp.Header.ClusterId)
 }
 
 // memberRemoveCommandFunc executes the "member remove" command.