Getting java.lang.IllegalArgumentException: Unsupported class file major version 58

[ghost]

Getting a java.lang.IllegalArgumentException: Unsupported class file major version 58 when executing ./gradlew pitests with pluging 'info.solidsoft.pitest' version '1.4.7' and JAVA14

My project setup:

$ ./gradlew --version

------------------------------------------------------------
Gradle 6.3
------------------------------------------------------------

Build time:   2020-03-24 19:52:07 UTC
Revision:     bacd40b727b0130eeac8855ae3f9fd9a0b207c60

Kotlin:       1.3.70
Groovy:       2.5.10
Ant:          Apache Ant(TM) version 1.10.7 compiled on September 1 2019
JVM:          14 (AdoptOpenJDK 14+36)
OS:           Mac OS X 10.15.3 x86_64

Output when executing ./gradlew pitests:

$ ./gradlew pitest

> Task :pitest FAILED
1:32:07 PM PIT >> INFO : Verbose logging is disabled. If you encounter an problem please enable it before reporting an issue.
Exception in thread "main" java.lang.IllegalArgumentException: Unsupported class file major version 58
        at org.pitest.reloc.asm.ClassReader.<init>(ClassReader.java:176)
        at org.pitest.reloc.asm.ClassReader.<init>(ClassReader.java:158)
        at org.pitest.reloc.asm.ClassReader.<init>(ClassReader.java:146)
        at org.pitest.classinfo.ClassInfoVisitor.getClassInfo(ClassInfoVisitor.java:41)
        at org.pitest.classinfo.Repository.nameToClassInfo(Repository.java:70)
        at org.pitest.classinfo.Repository.fetchClass(Repository.java:60)
        at org.pitest.classinfo.NameToClassInfo.apply(NameToClassInfo.java:17)
        at org.pitest.classinfo.NameToClassInfo.apply(NameToClassInfo.java:7)
        at java.base/java.util.function.Function.lambda$andThen$1(Function.java:88)
        at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:271)
        at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1624)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
        at org.pitest.classpath.CodeSource.getCode(CodeSource.java:43)
        at org.pitest.mutationtest.verify.DefaultBuildVerifier.verify(DefaultBuildVerifier.java:32)
        at org.pitest.mutationtest.tooling.MutationCoverage.verifyBuildSuitableForMutationTesting(MutationCoverage.java:223)
        at org.pitest.mutationtest.tooling.MutationCoverage.runReport(MutationCoverage.java:111)
        at org.pitest.mutationtest.tooling.EntryPoint.execute(EntryPoint.java:116)
        at org.pitest.mutationtest.tooling.EntryPoint.execute(EntryPoint.java:49)
        at org.pitest.mutationtest.commandline.MutationCoverageReport.runReport(MutationCoverageReport.java:87)
        at org.pitest.mutationtest.commandline.MutationCoverageReport.main(MutationCoverageReport.java:45)

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':pitest'.
> Process 'command '/Users/custom_user/.sdkman/candidates/java/14.0.0.hs-adpt/bin/java'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insigh
ts.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.3/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 2s
6 actionable tasks: 1 executed, 5 up-to-date

Does info.solidsoft.pitest version1.4.7 supports Java14?

[ghost]

Solved:
For Java-14 set Pitest v'1.5.1' (on pitest gradlew task) and info.solidsoft.pitest' version '1.4.7'
File build.gradle:

plugins {
    id 'info.solidsoft.pitest' version '1.4.7'
}

...

pitest {
    pitestVersion = '1.5.1'
    ...
}

[szpak]

Yes, 1.5.1 should be used for Java 14 - hcoles/pitest#748 . I will be available by default in the next GPP version.