java - JMockIt fails with AgentInitializationException: Agent JAR loaded but agent failed to initialize -

i developing plugin eclipse kepler. adding @runwith(jmockit.class) test class causes following error:

    jmockit: reinitializing under custom class loader org.eclipse.osgi.internal.baseadaptor.defaultclassloader@b7ccec1[com.mypackage.myclass:2.3.9.201508161221(id=1)] java.lang.reflect.invocationtargetexception         @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)         @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)         @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)         @ java.lang.reflect.method.invoke(method.java:606)         @ sun.instrument.instrumentationimpl.loadclassandstartagent(instrumentationimpl.java:382)         @ sun.instrument.instrumentationimpl.loadclassandcallagentmain(instrumentationimpl.java:407) caused by: java.lang.verifyerror         @ sun.instrument.instrumentationimpl.redefineclasses0(native method)         @ sun.instrument.instrumentationimpl.redefineclasses(instrumentationimpl.java:170)         @ mockit.internal.startup.startup.redefinemethods(startup.java:242)         @ mockit.internal.startup.startup.redefinemethods(startup.java:236)         @ mockit.internal.mockups.mockclasssetup.applyclassmodifications(mockclasssetup.java:134)         @ mockit.internal.mockups.mockclasssetup.redefinemethodsinclasshierarchy(mockclasssetup.java:91)         @ mockit.internal.mockups.mockclasssetup.redefinemethods(mockclasssetup.java:76)         @ mockit.mockup.redefinemethods(mockup.java:240)         @ mockit.mockup.redefineclassorimplementinterface(mockup.java:222)         @ mockit.mockup.<init>(mockup.java:131)         @ mockit.integration.junit4.internal.runnotifierdecorator.<init>(runnotifierdecorator.java:21)         @ mockit.internal.startup.jmockitinitialization.loadinternalstartupmocksforjunitintegration(jmockitinitialization.java:42)         @ mockit.internal.startup.jmockitinitialization.initialize(jmockitinitialization.java:27)         @ mockit.internal.startup.startup.applystartupmocks(startup.java:72)         @ mockit.internal.startup.startup.reapplystartupmocks(startup.java:124)         @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)         @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)         @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)         @ java.lang.reflect.method.invoke(method.java:606)         @ mockit.internal.util.methodreflection.invoke(methodreflection.java:94)         @ mockit.internal.util.methodreflection.invoke(methodreflection.java:159)         @ mockit.internal.startup.startup.reinitializejmockitundercustomclassloader(startup.java:118)         @ mockit.internal.startup.startup.agentmain(startup.java:101)         ... 6 more java.lang.illegalstateexception: com.sun.tools.attach.agentinitializationexception: agent jar loaded agent failed initialize         @ sun.reflect.nativeconstructoraccessorimpl.newinstance0(native method)         @ java.lang.reflect.constructor.newinstance(constructor.java:526)         @ org.apache.maven.surefire.junit4.junit4provider.execute(junit4provider.java:262)         @ org.apache.maven.surefire.junit4.junit4provider.executetestset(junit4provider.java:153)         @ org.apache.maven.surefire.junit4.junit4provider.invoke(junit4provider.java:124)         @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)         @ java.lang.reflect.method.invoke(method.java:606)         @ org.apache.maven.surefire.util.reflectionutils.invokemethodwitharray2(reflectionutils.java:208)         @ org.apache.maven.surefire.booter.providerfactory$providerproxy.invoke(providerfactory.java:156)         @ org.apache.maven.surefire.booter.providerfactory.invokeprovider(providerfactory.java:82)         @ org.eclipse.tycho.surefire.osgibooter.osgisurefirebooter.run(osgisurefirebooter.java:91)         @ org.eclipse.tycho.surefire.osgibooter.abstractuitestapplication$1.run(abstractuitestapplication.java:35)         @ org.eclipse.swt.widgets.runnablelock.run(runnablelock.java:35)         @ org.eclipse.swt.widgets.synchronizer.runasyncmessages(synchronizer.java:135)         @ org.eclipse.swt.widgets.display.runasyncmessages(display.java:4145)         @ org.eclipse.swt.widgets.display.readanddispatch(display.java:3762)         @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine$9.run(partrenderingengine.java:1113)         @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)         @ org.eclipse.e4.ui.internal.workbench.swt.partrenderingengine.run(partrenderingengine.java:997)         @ org.eclipse.e4.ui.internal.workbench.e4workbench.createandrunui(e4workbench.java:140)         @ org.eclipse.ui.internal.workbench$5.run(workbench.java:611)         @ org.eclipse.core.databinding.observable.realm.runwithdefault(realm.java:332)         @ org.eclipse.ui.internal.workbench.createandrunworkbench(workbench.java:567)         @ org.eclipse.ui.platformui.createandrunworkbench(platformui.java:150)         @ org.eclipse.ui.internal.ide.application.ideapplication.start(ideapplication.java:124)         @ org.eclipse.tycho.surefire.osgibooter.uitestapplication.runapplication(uitestapplication.java:31)         @ org.eclipse.tycho.surefire.osgibooter.abstractuitestapplication.run(abstractuitestapplication.java:120)         @ org.eclipse.tycho.surefire.osgibooter.uitestapplication.start(uitestapplication.java:37)         @ org.eclipse.equinox.internal.app.eclipseapphandle.run(eclipseapphandle.java:196)         @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.runapplication(eclipseapplauncher.java:110)         @ org.eclipse.core.runtime.internal.adaptor.eclipseapplauncher.start(eclipseapplauncher.java:79)         @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:354)         @ org.eclipse.core.runtime.adaptor.eclipsestarter.run(eclipsestarter.java:181)         @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)         @ java.lang.reflect.method.invoke(method.java:606)         @ org.eclipse.equinox.launcher.main.invokeframework(main.java:636)         @ org.eclipse.equinox.launcher.main.basicrun(main.java:591)         @ org.eclipse.equinox.launcher.main.run(main.java:1450)         @ org.eclipse.equinox.launcher.main.main(main.java:1426) caused by: com.sun.tools.attach.agentinitializationexception: agent jar loaded agent failed initialize         ... 39 more 

am doing wrong or jmockit bug? using version jmockit 1.18, junit 4.12

i expect @runwith(jmockit.class) should have taken care of problem.

in case, jmockit tutorial here, there notes should check, in case these resolve issue. in particular, these 2 seem relevant:

• (note eclipse users: when specifying order of jars in >classpath, make sure use "order , export" tab of "java build >path" window. also, make sure eclipse project uses jre jdk >installation instead of "plain" jre, since latter lacks >"attach" native library.)
• in other situations (like running on jdk implementations other >the oracle jdks), may need pass "-javaagent:path>/jmockit.jar" jvm initialization parameter. can done in >the "run/debug configuration" both eclipse , intellij idea, or >build tools such ant , maven.