Jenkins ver. 2.66 JDK8 Maven Plugin 2.16 maven-pmd-plugin:3.8

Sample project attached

Before upgrading to maven plugin 2.6, we already had runtime exceptions from PMD/CPD, but it did not prevent the build to fail. Since 2.6, it does fail :
[DRY] Successfully parsed file /root/.jenkins/workspace/exemplejar/target/cpd.xml of module exemplejar with 461 unique warnings and 0 duplicates.
java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:392)
at java.io.ObjectInputStream$BlockDataInputStream.readInt(ObjectInputStream.java:2827)
at java.io.ObjectInputStream.readInt(ObjectInputStream.java:971)
at com.google.common.collect.Serialization.readCount(Serialization.java:50)

[PMD] Successfully parsed file /root/.jenkins/workspace/common/common-dep/libcti-java-plugin/target/pmd.xml of module libcti-java-plugin with 0 unique warnings and 0 duplicates.
java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:392)
at java.io.ObjectInputStream$BlockDataInputStream.readInt(ObjectInputStream.java:2827)
at java.io.ObjectInputStream.readInt(ObjectInputStream.java:971)
at com.google.common.collect.Serialization.readCount(Serialization.java:50)