java.lang.UnsupportedOperationException
 at java.util.Collections$UnmodifiableMap.put(Collections.java:1459)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
 at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
 at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
 at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
 at org.codehaus.groovy.runtime.callsite.PojoMetaClassSite.call(PojoMetaClassSite.java:47)
 at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
 at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
 at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:163)
 at org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
 at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:158)
 at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:161)
 at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:165)
 at org.kohsuke.groovy.sandbox.impl.Checker.checkedSetProperty(Checker.java:402)
 at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.setProperty(SandboxInvoker.java:33)
 at com.cloudbees.groovy.cps.impl.PropertyAccessBlock.rawSet(PropertyAccessBlock.java:24)
 at WorkflowScript.run(WorkflowScript:27)
 at org.jenkinsci.plugins.pipeline.modeldefinition.when.impl.ExpressionConditionalScript.evaluate(ExpressionConditionalScript.groovy:48)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter$WhenEvaluator.evaluateWhen(ModelInterpreter.groovy:856)
 at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.every(CpsDefaultGroovyMethods:2228)
 at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.every(CpsDefaultGroovyMethods:2249)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter$WhenEvaluator.evaluateWhen(ModelInterpreter.groovy:855)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter$WhenEvaluator.evaluateWhen(ModelInterpreter.groovy)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter$WhenEvaluator.passedOrNotEvaluated(ModelInterpreter.groovy:846)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:273)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:586)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:585)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:272)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(ModelInterpreter.groovy:356)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.stageInput(ModelInterpreter.groovy:355)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:261)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:618)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inWrappers(ModelInterpreter.groovy:617)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:259)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:443)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.withEnvBlock(ModelInterpreter.groovy:442)
 at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.evaluateStage(ModelInterpreter.groovy:254)
 at ___cps.transform___(Native Method)
 at com.cloudbees.groovy.cps.impl.PropertyishBlock$ContinuationImpl.set(PropertyishBlock.java:88)
 at com.cloudbees.groovy.cps.impl.AssignmentBlock$ContinuationImpl.assignAndDone(AssignmentBlock.java:70)
 at sun.reflect.GeneratedMethodAccessor236.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:498)
 at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
 at com.cloudbees.groovy.cps.impl.ConstantBlock.eval(ConstantBlock.java:21)
 at com.cloudbees.groovy.cps.Next.step(Next.java:83)
 at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174)
 at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163)
 at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:129)
 at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:268)
 at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163)
 at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:18)
 at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:51)
 at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:185)
 at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:400)
 at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$400(CpsThreadGroup.java:96)
 at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:312)
 at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:276)
 at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:67)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
 at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
 at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE

stage('Build FIS-RU modules'){
 when{
 expression { params.BUILD_FIS_MODULES == true }
 }
 steps {
 ws("${WORKSPACE}/fis-platform"){
 bat "mvn clean install -DskipTests=${params.SKIP_TESTS}"
 }
 }
 }