Gate Fail on TestHeatMigrationsSQLite.test_walk_versions: missing 1 required positional argument: 'self'

At http://logs.openstack.org/56/302956/1/check/gate-heat-python34-db/6de121d/console.html#_2016-04-07_21_36_35_504

This appear within test env. python3.4

2016-04-07 21:36:35.504 | FAIL: heat.tests.db.test_migrations.TestHeatMigrationsMySQL.test_walk_versions
2016-04-07 21:36:35.504 | tags: worker-1
2016-04-07 21:36:35.504 | ----------------------------------------------------------------------
2016-04-07 21:36:35.505 | Traceback (most recent call last):
2016-04-07 21:36:35.505 | File "/home/jenkins/workspace/gate-heat-python34-db/heat/tests/db/test_migrations.py", line 140, in test_walk_versions
2016-04-07 21:36:35.505 | self.walk_versions(self.snake_walk, self.downgrade)
2016-04-07 21:36:35.505 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/oslo_db/sqlalchemy/test_migrations.py", line 193, in walk_versions
2016-04-07 21:36:35.505 | self.migrate_up(version, with_data=True)
2016-04-07 21:36:35.505 | File "/home/jenkins/workspace/gate-heat-python34-db/heat/tests/db/test_migrations.py", line 137, in migrate_up
2016-04-07 21:36:35.505 | super(HeatMigrationsCheckers, self).migrate_up(version, with_data)
2016-04-07 21:36:35.506 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/oslo_db/sqlalchemy/test_migrations.py", line 263, in migrate_up
2016-04-07 21:36:35.506 | self.REPOSITORY, version)
2016-04-07 21:36:35.506 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/migrate/versioning/api.py", line 186, in upgrade
2016-04-07 21:36:35.506 | return _migrate(url, repository, version, upgrade=True, err=err, **opts)
2016-04-07 21:36:35.506 | File "<decorator-gen-15>", line 2, in _migrate
2016-04-07 21:36:35.506 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/migrate/versioning/util/__init__.py", line 160, in with_engine
2016-04-07 21:36:35.506 | return f(*a, **kw)
2016-04-07 21:36:35.507 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/migrate/versioning/api.py", line 366, in _migrate
2016-04-07 21:36:35.507 | schema.runchange(ver, change, changeset.step)
2016-04-07 21:36:35.507 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/migrate/versioning/schema.py", line 93, in runchange
2016-04-07 21:36:35.507 | change.run(self.engine, step)
2016-04-07 21:36:35.507 | File "/home/jenkins/workspace/gate-heat-python34-db/.tox/py34/lib/python3.4/site-packages/migrate/versioning/script/py.py", line 148, in run
2016-04-07 21:36:35.507 | script_func(engine)
2016-04-07 21:36:35.508 | File "/home/jenkins/workspace/gate-heat-python34-db/heat/db/sqlalchemy/migrate_repo/versions/064_raw_template_predecessor.py", line 36, in upgrade
2016-04-07 21:36:35.508 | tmpl_table.c.predecessor.drop()
2016-04-07 21:36:35.508 | TypeError: drop() missing 1 required positional argument: 'self'