Fatal error during deployment

Problem/Motivation

I encountered a fatal error during a deployment which originated from DecoratedUserRolesAccessPolicy::calculatePermissions(). The following code calls into UserRolesAccessPolicy::calculatePermissions():

    if (!$account instanceof TokenAuthUserInterface) {
      return $this->inner->calculatePermissions($account, $scope);
    }

This will load user role entities, which triggers entity storage hooks, which triggers hook discovery, which results in a fatal error because the modules providing the hooks are not available in the middle of a container initialization.

Steps to reproduce

The exact conditions to trigger this error might be hard to reproduce. In my project it happened when I was uninstalling a custom module during a config import. Immediately after the uninstallation of the module, the DIC is being rebuilt, and this caused the following fatal error to be logged, aborting the deployment:

   [notice] Synchronisierung von Erweiterungen: ekw_juicer deinstalliert.

  In ClassResolver.php line 32:
    Class "masquerade_entity_type_alter" does not exist.

When debugging the stack trace it was evident that the bug originates from the DecoratedUserRolesAccessPolicy::calculatePermissions() method which is called when the anonymous user permissions are being checked during the container rebuild.

Proposed resolution

Skip the calculation of the permissions during the config sync procedure.