Privacy provider unit tests fail

[alexmorrisnz]

$ vendor/bin/phpunit "provider_testcase" privacy/tests/provider_test.php
Moodle 3.9.1+ (Build: 20200814), 408d00012e0b0149048b5b3d6f6389f3d854df08
Php: 7.2.31.1.18.04.1.1, pgsql: 10.14 (Ubuntu 10.14-0ubuntu0.18.04.1), OS: Linux 5.4.0-48-generic x86_64
PHPUnit 7.5.20 by Sebastian Bergmann and contributors.

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Time: 1.28 minutes, Memory: 120.50 MB

There was 1 failure:

1) provider_testcase::test_table_coverage
The following tables with user fields must be covered with metadata providers: 
  - assignfeedback_structured_cs (owner)

/privacy/tests/provider_test.php:327
/lib/phpunit/classes/advanced_testcase.php:80

To re-run:
 vendor/bin/phpunit "provider_testcase" privacy/tests/provider_test.php

FAILURES!
Tests: 1345, Assertions: 10465, Failures: 1.