Misleading warning about "Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0"

[PhilWakelin]

Using v1.0.6 of the cics-bundle-gradle plugin with a Gradle v7.6 build of a CICS bundle I get the following:

> Task :buildCICSBundle
Adding Java-based bundle parts from 'cicsBundlePart' dependency configuration
Adding Java-based bundle part: 'C:\Users\PhilWakelin\GitHub\cics-java-liberty-restapp\build\libs\cics-java-liberty-restapp.war'
Adding non-Java-based bundle parts from 'src/main/bundleParts'

Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

See https://docs.gradle.org/7.6/userguide/command_line_interface.html#sec:command_line_warnings

BUILD SUCCESSFUL in 1s
5 actionable tasks: 5 executed

This is the output of: gradle clean build --warning-mode all which only complains about Gradle 9 not Gradle 8.

> Task :buildCICSBundle
The org.gradle.util.VersionNumber type has been deprecated. This is scheduled to be removed in Gradle 9.0. Consult the upgrading guide for further information: https://docs.gradle.org/7.6/userguide/upgrading_version_7.html#org_gradle_util_reports_deprecations
Adding Java-based bundle parts from 'cicsBundlePart' dependency configuration
Adding Java-based bundle part: 'C:\Users\PhilWakelin\GitHub\cics-java-liberty-restapp\build\libs\cics-java-liberty-restapp.war'
Adding non-Java-based bundle parts from 'src/main/bundleParts'

BUILD SUCCESSFUL in 1s
5 actionable tasks: 5 executed

Setup is:
Kotlin: 1.7.10
Groovy: 3.0.13
Ant: Apache Ant(TM) version 1.10.11 compiled on July 10 2021
JVM: 1.8.0_391 (IBM Corporation 2.9)
OS: Windows 11 10.0 amd64

This is the sample build file in use https://github.com/cicsdev/cics-java-liberty-restapp/blob/main/build.gradle

[ind1go]

I don't think there's a lot we can do about this one. The VersionNumber class was due to be removed in Gradle 8, but the removal was then moved forward to Gradle 9. So basically, at the version of Gradle you're using (7.6), Gradle fully believes that it will be removed in the next version. But move to Gradle 8 and you'll find it still supported.

[PhilWakelin]

This problem now causes Gradle 9.3.1 builds to fail

C:\Users\PhilWakelin\GitHub\cics-java-jcics-samples> ./gradlew clean build

FAILURE: Build failed with an exception.

* What went wrong:
Could not create task ':cics-java-jcics-link-bundle:buildCICSBundle'.
> Could not create task of type 'BuildBundleTask'.
   > Could not generate a decorated class for type BuildBundleTask.
      > org.gradle.util.VersionNumber

[ChrisAtkinson1]

We need version 9.1 and above for java 25. And 8.5 and above to support java 21