Java 9 compatibility

[sormuras]

Seems like the ASM version used in the Gradle plugin is out of date:

[...]
Executing task ':junit-platform-commons-java-9:degraph' (up-to-date check took 0.0 secs) due to:
  Task has failed previously.
:junit-platform-commons-java-9:degraph FAILED
:junit-platform-commons-java-9:degraph (Thread[Task worker for ':',5,main]) completed. Took 0.006 secs.

FAILURE: Build failed with an exception.

* Where:
Script 'C:\Dev\Github\junit-team\junit5\gradle\degraph.gradle' line: 46

* What went wrong:
Execution failed for task ':junit-platform-commons-java-9:degraph'.
> java.lang.IllegalArgumentException (no error message)

* Try:
Run with --debug option to get more log output.

* Exception is:
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':junit-platform-commons-java-9:degraph'.
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
	at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:63)
	at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
	at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
	at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88)
	at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
	at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
	at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
	at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
	at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
	at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:124)
	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:80)
	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:105)
	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:99)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:625)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:580)
	at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:99)
	at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
	at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
	at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
Caused by: java.lang.IllegalArgumentException
	at org.objectweb.asm.ClassReader.<init>(Unknown Source)
	at org.objectweb.asm.ClassReader.<init>(Unknown Source)
	at org.objectweb.asm.ClassReader.<init>(Unknown Source)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$.de$schauderhaft$degraph$analysis$asm$Analyzer$$analyze$1(Analyzer.scala:32)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$$anonfun$analyze$1$$anonfun$apply$1.apply(Analyzer.scala:51)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$$anonfun$analyze$1$$anonfun$apply$1.apply(Analyzer.scala:50)
	at scala.collection.immutable.Set$Set2.foreach(Set.scala:111)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$$anonfun$analyze$1.apply(Analyzer.scala:50)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$$anonfun$analyze$1.apply(Analyzer.scala:47)
	at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
	at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
	at de.schauderhaft.degraph.analysis.asm.Analyzer$.analyze(Analyzer.scala:47)
	at de.schauderhaft.degraph.configuration.Configuration.createGraph(Configuration.scala:26)
	at de.schauderhaft.degraph.check.Check$$anon$1.apply(Check.scala:56)
	at de.schauderhaft.degraph.check.Check$$anon$1.apply(Check.scala:53)
	at de.schauderhaft.degraph.check.hamcrest.HamcrestWrapper.matchesSafely(HamcrestWrapper.scala:8)
	at org.hamcrest.TypeSafeMatcher.matches(TypeSafeMatcher.java:65)
	at org.hamcrest.core.Is.matches(Is.java:27)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:12)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)
	at org.hamcrest.MatcherAssert$assertThat.callStatic(Unknown Source)
	at DegraphCheck.runDegraph(C:\Dev\Github\junit-team\junit5\gradle\degraph.gradle:46)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
	at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.doExecute(DefaultTaskClassInfoStore.java:141)
	at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134)
	at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:121)
	at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:731)
	at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:705)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:122)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:197)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:107)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:111)
	at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
	... 27 more