Lowest vendors broke tests

[bigfoot90]

Installing vendors with composer update --prefer-lowest broke tests.

./vendor/phpunit/phpunit/phpunit -c tests/phpunit_doctrine_dbal.xml
PHPUnit 4.1.0 by Sebastian Bergmann.

Configuration read from /home/bigfoot/projects/bigfoot/DoctrineOrmOdmAdapter/tests/phpunit_doctrine_dbal.xml

......F...I...................................................... 65 / 74 ( 87%)
.........

Time: 0 seconds, Memory: 19.50Mb

There was 1 failure:

1) Doctrine\Tests\ORM\ODMAdapter\Functions\ObjectAdapterManagerTest::testRemoveObject
Failed asserting that Doctrine\Tests\Models\ReferenceMappingObject Object &0000000005f4cca2000055c3c44029f0 (
    'id' => 0
    'uuid' => 'd494a812-7366-4a63-a5d6-f4aa4fc1310b'
    'referencedField' => null
    'entityName' => 'test-name-on-reference'
) is null.

/home/bigfoot/projects/bigfoot/DoctrineOrmOdmAdapter/tests/Doctrine/Tests/ORM/ODMAdapter/Functions/ObjectAdapterManagerTest.php:148

FAILURES!                                              
Tests: 74, Assertions: 255, Failures: 1, Incomplete: 1.