ownership plugin fails to find the user's email - although it's properly defined in the user's configuration. My username is yanivk, but my email is email@example.com - therefore I cannot use the default user mail extension.
However, I expect the ownership plugin to take this data from the user's config, and it doesn't:
[OwnershipPlugin] - Setting JOB_OWNER=yanivk
[OwnershipPlugin] - Setting JOB_OWNER_EMAIL=