Building process was ruined by JEP-200 . I tried to fix it as it was suggested by defining
      -Dhudson.remoting.ClassFilter but it does not helped.

      I got in logs: Caused by: java.lang.UnsupportedOperationException: Refusing to marshal java.io.PrintStream

      and I've added filter: -Dhudson.remoting.ClassFilter=java.io.PrintStream

      then I've got: Caused by: java.lang.UnsupportedOperationException: Refusing to marshal java.nio.channels.Channels$1

      filter: -Dhudson.remoting.ClassFilter=java.io.PrintStream,java.nio.channels.Channels$1

      but I'm receiving the same error:

      Jan 16, 2018 2:45:47 PM jenkins.security.ClassFilterImpl lambda$isBlacklisted$1
      WARNING: java.nio.channels.Channels$1 in JRE might be dangerous, so rejecting; see https://jenkins.io/redirect/class-filter/

          [JENKINS-48961] Building process was ruined by JEP-200

          FATAL: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild
          java.lang.UnsupportedOperationException: Refusing to marshal java.nio.channels.Channels$1 for security reasons; see https://jenkins.io/redirect/class-filter/
          at hudson.util.XStream2$BlacklistedTypesConverter.marshal(XStream2.java:530)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
          at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)
          Caused: java.lang.RuntimeException: Failed to serialize java.io.FilterOutputStream#out for class java.io.PrintStream
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)
          at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)
          at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
          at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)
          at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
          at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)
          Caused: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.EnvironmentVarSetter#log for class org.jenkinsci.plugins.EnvironmentVarSetter
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)
          at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)
          at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
          at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)
          at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88)
          at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64)
          at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84)
          at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265)
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252)
          Caused: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild
          at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256)
          at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224)
          at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138)
          at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209)
          at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150)
          at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58)
          at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43)
          at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82)
          at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37)
          at com.thoughtworks.xstream.XStream.marshal(XStream.java:1026)
          at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015)
          at com.thoughtworks.xstream.XStream.toXML(XStream.java:988)
          at hudson.XmlFile.write(XmlFile.java:194)
          Caused: java.io.IOException
          at hudson.XmlFile.write(XmlFile.java:201)
          at hudson.model.Run.save(Run.java:1923)
          at hudson.model.Run.setDisplayName(Run.java:803)
          at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter.setDisplayName(BuildNameSetter.java:76)
          at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter.access$000(BuildNameSetter.java:31)
          at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter$1.tearDown(BuildNameSetter.java:64)
          at hudson.model.Build$BuildExecution.doRun(Build.java:174)
          at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
          at hudson.model.Run.execute(Run.java:1727)
          at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
          at hudson.model.ResourceController.execute(ResourceController.java:97)
          at hudson.model.Executor.run(Executor.java:429)

          Otar Onashvili added a comment - FATAL: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild java.lang.UnsupportedOperationException: Refusing to marshal java.nio.channels.Channels$1 for security reasons; see https://jenkins.io/redirect/class-filter/ at hudson.util.XStream2$BlacklistedTypesConverter.marshal(XStream2.java:530) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84) at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265) at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252) Caused: java.lang.RuntimeException: Failed to serialize java.io.FilterOutputStream#out for class java.io.PrintStream at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256) at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138) at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209) at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84) at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265) at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252) Caused: java.lang.RuntimeException: Failed to serialize org.jenkinsci.plugins.EnvironmentVarSetter#log for class org.jenkinsci.plugins.EnvironmentVarSetter at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256) at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138) at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209) at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:88) at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.writeItem(AbstractCollectionConverter.java:64) at com.thoughtworks.xstream.converters.collections.CollectionConverter.marshal(CollectionConverter.java:74) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller$1.convertAnother(AbstractReferenceMarshaller.java:84) at hudson.util.RobustReflectionConverter.marshallField(RobustReflectionConverter.java:265) at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:252) Caused: java.lang.RuntimeException: Failed to serialize hudson.model.Actionable#actions for class hudson.model.FreeStyleBuild at hudson.util.RobustReflectionConverter$2.writeField(RobustReflectionConverter.java:256) at hudson.util.RobustReflectionConverter$2.visit(RobustReflectionConverter.java:224) at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.visitSerializableFields(PureJavaReflectionProvider.java:138) at hudson.util.RobustReflectionConverter.doMarshal(RobustReflectionConverter.java:209) at hudson.util.RobustReflectionConverter.marshal(RobustReflectionConverter.java:150) at com.thoughtworks.xstream.core.AbstractReferenceMarshaller.convert(AbstractReferenceMarshaller.java:69) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:58) at com.thoughtworks.xstream.core.TreeMarshaller.convertAnother(TreeMarshaller.java:43) at com.thoughtworks.xstream.core.TreeMarshaller.start(TreeMarshaller.java:82) at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.marshal(AbstractTreeMarshallingStrategy.java:37) at com.thoughtworks.xstream.XStream.marshal(XStream.java:1026) at com.thoughtworks.xstream.XStream.marshal(XStream.java:1015) at com.thoughtworks.xstream.XStream.toXML(XStream.java:988) at hudson.XmlFile.write(XmlFile.java:194) Caused: java.io.IOException at hudson.XmlFile.write(XmlFile.java:201) at hudson.model.Run.save(Run.java:1923) at hudson.model.Run.setDisplayName(Run.java:803) at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter.setDisplayName(BuildNameSetter.java:76) at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter.access$000(BuildNameSetter.java:31) at org.jenkinsci.plugins.buildnamesetter.BuildNameSetter$1.tearDown(BuildNameSetter.java:64) at hudson.model.Build$BuildExecution.doRun(Build.java:174) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504) at hudson.model.Run.execute(Run.java:1727) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:97) at hudson.model.Executor.run(Executor.java:429)

          Oleg Nenashev added a comment -

          onashvili Have you updated to 2.6.8? From what I see in this stacktrace, the issue is fixed by JENKINS-48944 (EnvironmentVarsSetter#log is no longer serialized)

          Oleg Nenashev added a comment - onashvili Have you updated to 2.6.8? From what I see in this stacktrace, the issue is fixed by JENKINS-48944 (EnvironmentVarsSetter#log is no longer serialized)

          oleg_nenashev I've updated it now and yes, it works.

          Otar Onashvili added a comment - oleg_nenashev I've updated it now and yes, it works.

          Oleg Nenashev added a comment -

          OK, thanks for the confirmation

          Oleg Nenashev added a comment - OK, thanks for the confirmation

            Unassigned Unassigned
            onashvili Otar Onashvili
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              Created:
              Updated:
              Resolved: