Merge "Update README section on Python3 support"
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index b22a434..1418b3f 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -176,7 +176,7 @@
 
         self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild_server,
-                          server['id'], self.image_ref_alt)
+                          server['id'], self.image_ref)
 
     @test.related_bug('1660878', status_code=409)
     @test.attr(type=['negative'])
@@ -198,7 +198,7 @@
         self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild_server,
                           nonexistent_server,
-                          self.image_ref_alt)
+                          self.image_ref)
 
     @test.attr(type=['negative'])
     @decorators.idempotent_id('fd57f159-68d6-4c2a-902b-03070828a87e')
diff --git a/test-requirements.txt b/test-requirements.txt
index 844d32c..936d5aa 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-hacking<0.13,>=0.12.0 # Apache-2.0
+hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 # needed for doc build
 sphinx>=1.5.1 # BSD
 oslosphinx>=4.7.0 # Apache-2.0