In maven-type tasks, after completing a multi-module maven build, no matter it is successful or not, I get the following error:
FATAL: null
java.lang.ClassNotFoundException: java.lang.UNIXProcess
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:466)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:563)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:560)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:292)
at hudson.util.ProcessTree$UnixReflection.<clinit>(ProcessTree.java:699)
Caused: java.lang.LinkageError
at hudson.util.ProcessTree$UnixReflection.<clinit>(ProcessTree.java:710)
at hudson.util.ProcessTree$UnixProcess.kill(ProcessTree.java:647)
at hudson.util.ProcessTree$UnixProcess.killRecursively(ProcessTree.java:668)
at hudson.util.ProcessTree$Unix.killAll(ProcessTree.java:589)
at hudson.Launcher$LocalLauncher.kill(Launcher.java:949)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:502)
at hudson.model.Run.execute(Run.java:1737)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:543)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:419)
Task status is always failed.
Java 9 is not supported in Jenkins, no ETA so far