Travis CI with Django 1.7.1 has operational error - django

Question

I ask you about CI(Continuous Integration).
For using this service, I choose travis CI.
and problem is that in local test, there is no problem. but on travis I have error about operational error in db.
The reason in local is that there is no add to my app in installed app section.
I fixed it, but travis could not find my app, so it shows operational errors again and again.
I use Django 1.7.1 versions.
Is there anyone suggests me solutions??
I posted travis build log
$ python manage.py test
Creating test database for alias 'default'...
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
utility.execute()
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/commands/test.py", line 50, in run_from_argv
super(Command, self).run_from_argv(argv)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
self.execute(*args, **options.__dict__)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/commands/test.py", line 71, in execute
super(Command, self).execute(*args, **options)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute
output = self.handle(*args, **options)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/management/commands/test.py", line 88, in handle
failures = test_runner.run_tests(test_labels)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/test/runner.py", line 147, in run_tests
old_config = self.setup_databases()
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/test/runner.py", line 109, in setup_databases
return setup_databases(self.verbosity, self.interactive, **kwargs)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/test/runner.py", line 299, in setup_databases
serialize=connection.settings_dict.get("TEST", {}).get("SERIALIZE", True),
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/creation.py", line 385, in create_test_db
self.connection._test_serialized_contents = self.serialize_db_to_string()
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/creation.py", line 421, in serialize_db_to_string
serializers.serialize("json", get_objects(), indent=None, stream=out)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/serializers/__init__.py", line 128, in serialize
s.serialize(queryset, **options)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/core/serializers/base.py", line 52, in serialize
for obj in queryset:
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/creation.py", line 417, in get_objects
for obj in queryset.iterator():
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/models/query.py", line 265, in iterator
for row in compiler.results_iter():
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 700, in results_iter
for rows in self.execute_sql(MULTI):
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 786, in execute_sql
cursor.execute(sql, params)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/travis/virtualenv/python2.7.9/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 485, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: users_user
The command "python manage.py test" exited with 1.
and here is my travis.yml
language: python
python:
- '2.7'
install:
- pip install -r requirements.txt
script:
- python manage.py migrate
- python manage.py test