Debug printing of annotation processing in Eclipse

debugoptions

org.eclipse.jdt.apt.core/debug=true

instructions.md

For annotation processing debuging

Kick off eclipse

-debug path/to/debugoptions

java.lang.UnsupportedClassVersionError: io/jstach/rainbowgum/apt/ConfigProcessor has been compiled by a more recent version of the Java Runtime (class file version 65.0), this version of the Java Runtime only recognizes class file versions up to 61.0
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
	at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:592)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
	at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.loadJava6FactoryClasses(AnnotationProcessorFactoryLoader.java:641)
	at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.loadFactories(AnnotationProcessorFactoryLoader.java:580)
	at org.eclipse.jdt.apt.core.internal.AnnotationProcessorFactoryLoader.getJava6FactoriesAndAttributesForProject(AnnotationProcessorFactoryLoader.java:458)
	at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:135)
	at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:952)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:449)
	at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:425)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:411)
	at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:214)
	at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:342)
	at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:79)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:286)
	at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:192)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:1079)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:296)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:352)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:441)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:47)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:444)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:555)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:503)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:585)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:207)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:300)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)