rackspace object storage acceptance tests fixes
diff --git a/acceptance/rackspace/objectstorage/v1/containers_test.go b/acceptance/rackspace/objectstorage/v1/containers_test.go
index d22057b..a7339cf 100644
--- a/acceptance/rackspace/objectstorage/v1/containers_test.go
+++ b/acceptance/rackspace/objectstorage/v1/containers_test.go
@@ -57,30 +57,28 @@
 		t.Errorf("No containers listed for your current token.")
 	}
 
-	headers, err := raxContainers.Create(c, "gophercloud-test", nil).ExtractHeaders()
-	th.AssertNoErr(t, err)
+	createres := raxContainers.Create(c, "gophercloud-test", nil)
+	th.AssertNoErr(t, createres.Err)
 	defer func() {
-		_, err := raxContainers.Delete(c, "gophercloud-test").ExtractHeaders()
-		th.AssertNoErr(t, err)
+		res := raxContainers.Delete(c, "gophercloud-test")
+		th.AssertNoErr(t, res.Err)
 	}()
 
-	headers, err = raxContainers.Update(c, "gophercloud-test", raxContainers.UpdateOpts{Metadata: map[string]string{"white": "mountains"}}).ExtractHeaders()
-	th.AssertNoErr(t, err)
-	t.Logf("Headers from Update Account request: %+v\n", headers)
+	updateres := raxContainers.Update(c, "gophercloud-test", raxContainers.UpdateOpts{Metadata: map[string]string{"white": "mountains"}})
+	th.AssertNoErr(t, updateres.Err)
+	t.Logf("Headers from Update Account request: %+v\n", updateres.Header)
 	defer func() {
-		_, err := raxContainers.Update(c, "gophercloud-test", raxContainers.UpdateOpts{Metadata: map[string]string{"white": ""}}).ExtractHeaders()
-		th.AssertNoErr(t, err)
+		res := raxContainers.Update(c, "gophercloud-test", raxContainers.UpdateOpts{Metadata: map[string]string{"white": ""}})
+		th.AssertNoErr(t, res.Err)
 		metadata, err := raxContainers.Get(c, "gophercloud-test").ExtractMetadata()
 		th.AssertNoErr(t, err)
 		t.Logf("Metadata from Get Account request (after update reverted): %+v\n", metadata)
 		th.CheckEquals(t, metadata["White"], "")
 	}()
 
-	getResult := raxContainers.Get(c, "gophercloud-test")
-	headers, err = getResult.ExtractHeaders()
-	th.AssertNoErr(t, err)
-	t.Logf("Headers from Get Account request (after update): %+v\n", headers)
-	metadata, err := getResult.ExtractMetadata()
+	getres := raxContainers.Get(c, "gophercloud-test")
+	t.Logf("Headers from Get Account request (after update): %+v\n", getres.Header)
+	metadata, err := getres.ExtractMetadata()
 	th.AssertNoErr(t, err)
 	t.Logf("Metadata from Get Account request (after update): %+v\n", metadata)
 	th.CheckEquals(t, metadata["White"], "mountains")