With the CMF, we want to fix as many deprecated notices as possible. However, as we rely on SonataAdminBundle, there still are some unresolvable deprecated notices. This causes the build to fail.

We can use the weak mode and have a passing build, but this also hides the messages of the deprecations. This means new deprecated notices can be introduced without us noticing it. I think there should be another mode that still displays the messages, but exits with 0.