----------System.err:(15/900)----------
java.lang.NoClassDefFoundError: jdk/test/lib/helpers/ClassFileInstaller$Manifest
at RedefineClassHelper.main(RedefineClassHelper.java:69)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1576)
Caused by: java.lang.ClassNotFoundException: jdk.test.lib.helpers.ClassFileInstaller$Manifest
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:595)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:528)
... 5 more

[~ccheung] this looks ike the test lib build issue you fixed elsewhere.