E.g. in this build (for this change):
There were 2 errors:
1) Wikibase\Search\Elastic\Tests\Fields\StatementQuantityFieldTest::testGetFieldData with data set "entity with statements but no qualifiers" (Wikibase\DataModel\Entity\Item Object (...), array())
TypeError: Argument 1 passed to MediaWikiIntegrationTestCase::{closure}() must be an instance of Wikibase\DataModel\Entity\EntityIdValue, instance of DataValues\UnDeserializableValue given, called in /workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php on line 177
/workspace/src/extensions/Wikibase/repo/WikibaseRepo.datatypes.php:421
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php:177
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php:196
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php:238
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementQuantityField.php:77
/workspace/src/extensions/WikibaseCirrusSearch/tests/phpunit/Fields/StatementQuantityFieldTest.php:105
phpvfscomposer:///workspace/src/vendor/phpunit/phpunit/phpunit:106
2) Wikibase\Search\Elastic\Tests\Fields\StatementQuantityFieldTest::testGetFieldData with data set "entity with statements, one with a quantity qualifier" (Wikibase\DataModel\Entity\Item Object (...), array('P7=string|20'))
TypeError: Argument 1 passed to MediaWikiIntegrationTestCase::{closure}() must be an instance of Wikibase\DataModel\Entity\EntityIdValue, instance of DataValues\UnDeserializableValue given, called in /workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php on line 177
/workspace/src/extensions/Wikibase/repo/WikibaseRepo.datatypes.php:421
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementsField.php:177
/workspace/src/extensions/WikibaseCirrusSearch/src/Fields/StatementQuantityField.php:82
/workspace/src/extensions/WikibaseCirrusSearch/tests/phpunit/Fields/StatementQuantityFieldTest.php:105
phpvfscomposer:///workspace/src/vendor/phpunit/phpunit/phpunit:106Presumably related to our work in T369149, though it’s not yet clear what the problem is. Annoyingly, I can’t reproduce the error locally.