Here http://qa.drupal.org/pifr/test/483348 all the tests are green, but there is an exception in results (click review log and scroll down):
Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 1366 Incorrect integer value: '' for column 'line' at row 3: INSERT INTO {simpletest} (test_id, test_class, status, message, message_group, function, line, file) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7), (:db_insert_placeholder_8, :db_insert_placeholder_9, :db_insert_placeholder_10, :db_insert_placeholder_11, :db_insert_placeholder_12, :db_insert_placeholder_13, :db_insert_placeholder_14, :db_insert_placeholder_15), (:db_insert_placeholder_16, :db_insert_placeholder_17, :db_insert_placeholder_18, :db_insert_placeholder_19, :db_insert_placeholder_20, :db_insert_placeholder_21, :db_insert_placeholder_22, :db_insert_placeholder_23); Array
(
[:db_insert_placeholder_0] => 821
[:db_insert_placeholder_1] => Drupal\Tests\Component\PhpStorage\FileStorageTest
[:db_insert_placeholder_2] => pass
[:db_insert_placeholder_3] =>
[:db_insert_placeholder_4] => Other
[:db_insert_placeholder_5] => Drupal\Tests\Component\PhpStorage\FileStorageTest->testCRUD()
[:db_insert_placeholder_6] => 42
[:db_insert_placeholder_7] => /var/lib/drupaltestbot/sites/default/files/checkout/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
[:db_insert_placeholder_8] => 821
[:db_insert_placeholder_9] => Drupal\Tests\Component\PhpStorage\FileStorageTest
[:db_insert_placeholder_10] => pass
[:db_insert_placeholder_11] =>
[:db_insert_placeholder_12] => Other
[:db_insert_placeholder_13] => Drupal\Tests\Component\PhpStorage\FileStorageTest->testReadOnly()
[:db_insert_placeholder_14] => 51
[:db_insert_placeholder_15] => /var/lib/drupaltestbot/sites/default/files/checkout/core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
[:db_insert_placeholder_16] => 821
[:db_insert_placeholder_17] =>
[:db_insert_placeholder_18] => pass
[:db_insert_placeholder_19] =>
[:db_insert_placeholder_20] => Other
[:db_insert_placeholder_21] => ->Drupal\Tests\Core\Route\RouterRoleTest::testRoleAccess()
[:db_insert_placeholder_22] =>
[:db_insert_placeholder_23] =>
)
in Drupal\Core\Database\Connection->query() (line 554 of /var/lib/drupaltestbot/sites/default/files/checkout/core/lib/Drupal/Core/Database/Connection.php).].
[16:22:48] Command [/usr/bin/php ./core/scripts/run-tests.sh --php /usr/bin/php --url 'http://drupaltestbot659-mysql/checkout' --all --list 2>&1] succeeded.
[16:22:50] Review complete. test_id=483348 result code=10 details=Array
(
[@pass] => 53909
[@fail] => 0
[@exception] => 0
[@debug] => 142
)