org.jboss.tools.wtp.runtimes.tomcat.itests ......... FAILURE

The build of org.jboss.tools.wtp.runtimes.tomcat.itests fails because it downloads http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.39/bin//apache-tomcat-6.0.39.zip
but http://archive.apache.org/ is under maintenance and not available:

This service is currently undergoing maintenance!

We are in the process of relocating this service. To save on the immense bandwidth that this service outputs, we have put it in maintenance mode, disabling all downloads for the next few days. We expect the maintenance to be complete no later than the morning of Monday the 11th of April, 2016.

With regards, the Apache Infrastructure Team.