Removing the lucene-sandbox module from the feature definition. It didn't show up in the test as the lucene-sandbox bundle (which causes the error as it also exports a package exported by another Lucene module) wasn't in STARTED state.

Thanks, I was about to ask on the pull request, what the actual cause was. Good catch.

So there is a test now which starts all bundles. Removing lucene-sandbox should be fine, we also exclude it in other places.

+1 no problem with removing sandbox imo