Build for a pull request has more dependencies than last stable build and fails now

[Benjamin]

Dear all,

I stumbled over a pull request which is supposed to fix JENKINS-25084 which has not yet been accepted due to failed checks.

I tried to understand why the checks failed and took a look at the console outupt of the failed Jenkins build. 

It seems that only two jelly files were changed but some other dependencies are now pulled in and they are causing a failure. The author of the pull request commented:

Looked into the build failure since only two jelly templates actually changed and it was all css/javascript changes in those templates. It blows up on a maven dependency for httpcore. Looking at the prior successful build from two months ago, this build pulls in a lot more dependencies in the console log.

Do you have an explanation why now more dependencies are pulled in? I could not find where these are declared and expected this to be stable, as no pom.xml was changed.

I would also be interested in hints how to proceed to e.g. trigger a rebuild.

Best regards

Benjamin