Symfony version(s) affected: 5.2.0-RC1. 5.2.0-dev

Description
As soon as you install composer require knplabs/doctrine-behaviors into a fresh install of Symfony 5.2.0-RC1 (or "next") you get PHP exhausted memory errors

I have tested this, and reproduced it, with a 8Gb memory_limit in PHP 7.4.12 and PHP 8.0.0-dev.

How to reproduce

Simple :)

mkdir my_project && cd my_project
symfony new  --full . --version=next
composer require knplabs/doctrine-behaviors

Possible Solution
Sorry, I don't have a solution, I can only report the issue this time.

Additional context
@jderusse mentioned here that #39015 might be related, but I manually reverted that PR and the problem persisted for me.

screenshot of whole reproducer