PHPUnit 6.5 have been released a few days ago
https://github.com/sebastianbergmann/phpunit/wiki/Release-Announcement-fo...
This new "minor" version requires a new "major" version of
phpunit/mock-objects (5.0.4)
So:
https://bugzilla.redhat.com/1519719
BTW, this introduce some changes breaking the stack API.
So some packages start using "phpunit/phpunit": "^6 <6.5"
(php-mock)
and of course others "phpunit/phpunit": ">=6.5.0" (zend-session)
Nightmare...
Remi.