NoClassDefFoundError: PlexusIoResourceCollection

[adnan-emd]

I am getting a compile error when I run "mvn clean package":
java.lang.NoClassDefFoundError: org/codehaus/plexus/components/io/resources/PlexusIoResourceCollection

The output of the build is attached. I am using 64-bit Ubuntu 15.04.
mvn --version shows this:
Apache Maven 2.2.1 (rdebian-17)
Java version: 1.8.0_45-internal
Java home: /usr/lib/jvm/java-8-openjdk-amd64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux" version: "4.1.5-rt5-custom" arch: "amd64" Family: "unix"

build_output.txt