I was trying to contribute our RAP M7 build to the Simultaneous Release when I found out that our contribution leads to some missing dependencies to Jetty bundles from other projects. It looks like some projects were relying that RAP contributes a specific version of those bundles, but we don't... we always try to align our Jetty bundle versions to the ones that Eclipse Platform uses.
Short version: We are using (and contributing) Jetty 9.4.5.v20170502 now, which breaks other projects that define a dependency to other versions without contributing these bundles. In order to get green build I had to disable temporarily the full dependency chain:
It is documented in the following bug - please remember to enable your contribution again after fixing the issues!