Hudson detects a successful Ant build as a failure?

It could be that the failure message is related to the hudson job while the success relates to the ant build step. It's possible there are other steps after the build, which are failing. If I were you I'd look at the project configuration page to confirm.

There is no other build step after Invoke Ant. There is an Archive the artifacts Post-build Action but I think it is successful because I can see the link to the artifact in the build results page. – Chry Cheng Mar 4 at 2:38.

Hudson/Jenkins looks at the exit status of the last command in the job. If you have other steps after ant, such as cleaning up temporary files, uninstalling, etc, you need to save the status of the build before doing that, then as your last step make sure you exit appropriately. For example, for some of our jobs we have a final "summary" python script that greps the logs and exits with an appropriate exit code if there were failures in the build or test scripts.

Running this as the very last step insures hudson reports the proper status, plus it lets us print a nice concise summary at the end of the job.

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