changing maven-javadoc-plugin from version 2.9.1 to 2.10 breaks the build

build is startet with mvn -U clean deploy -DperformRelease=true
and worked fine for several weeks without any changes.

From today it produces the content of the attached console.log.

We did not specify a version for maven-javadoc-plugin. After secifying maven-javadoc-plugin:2.9.1 in the parent pom everything works fine again.

(pom.xml (12 kB) - parent-pom, pom.xml (3 kB) pom of project which breaks the build