Struggling to build plugin after update

[Jean-Marc Meessen]

Hello,

As a new plugin maintainer (https://github.com/jenkinsci/webhook-step-plugin), I modernized it, following the Hacktoberfest checklist and dependabot recommendations. All the PRs and master built successfully on the Jenkins CI.

I now wanted to start "refreshing" some parts of the code and thus started by rebuilding the master branch on my dev environment. But, alas, all the tests now fail with class related errors (NoClassDefFoundError: Could not initialize class). None of the tests work any more. 

I tried both on Gitpod and my local environment. Maven is 3.8.3 and Java is either 11 or 17.

Any suggestions?

Is there a new build parameter required ?
Where should I start digging (besides pinpointing the exact error messages)?

Could a good soul try to compile the master branch on his dev environment to see if the problem is with my (default) settings ?

/- Jmm

[Mark Waite]

Thanks for asking.  That's an interesting failure message.

I would not expect very many of the Jenkins components will compile with Java 17.  We've only just recently added a Java 17 runtime preview that is using standard Jenkins code that is compiled for Java 8.

When I clone and compile https://github.com/jenkinsci/webhook-step-plugin with Java 11 on Linux, it passes all tests.

When I clone and compile https://github.com/jenkinsci/webhook-step-plugin with Java 17 on Linux, it fails tests with java.lang.NoClassDefFoundError com.google.inject.internal.cglib.core.$ReflectUtils

That seems to be a slightly different failure than the failure you're seeing, but that may not be too surprising if we are running different versions of Java 17 or different environments.

Mark Waite

[Jean-Marc Meessen]

Thank you for the hint, Mark. And thank you for taking the time to compile.

I have now a bone to chew on.

/- Jmm 

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