Xerces version conflict produces ERROR messages in the logs.

Failed to set setXIncludeAware(true) for parser org.apache.xerces.jaxp.DocumentBuilderFactoryImpl@3801318b:java.lang.UnsupportedOperationException: This parser does not support specification "null" version "null"
java.lang.UnsupportedOperationException: This parser does not support specification "null" version "null"

Not directly linked to the failures, but should be fixed anyway.
The issues is the same as NUTCH-964, so we will have to make sure we use the right xerces version.