If I run my local e4 tools build it works fine. I'm also using CBI for the build, so it is strange that it broke on our build server.
[INFO] org.eclipse.e4.tools Build ........................ SUCCESS [3.675s]
[INFO] org.eclipse.e4.tools.services Build ............... SUCCESS [0.193s]
[INFO] org.eclipse.e4.tools.compat Build ................. SUCCESS [0.181s]
[INFO] org.eclipse.e4.tools.emf.uiBuild .................. SUCCESS [2.899s]
[INFO] org.eclipse.e4.tools.emf.editorBuild .............. SUCCESS [0.244s]
[INFO] org.eclipse.e4.tools.emf.liveeditor Build ......... SUCCESS [0.159s]
[INFO] org.eclipse.e4.tools.emf.editor3x Build ........... SUCCESS [0.163s]
[INFO] org.eclipse.e4.tools.emf.ui.script.js Build ....... SUCCESS [0.135s]
[INFO] org.eclipse.e4.tools.jdt.templates Build .......... SUCCESS [0.322s]
[INFO] org.eclipse.e4.tools.css.editor Build ............. SUCCESS [0.871s]
[INFO] org.eclipse.e4.tools.css.editor.ui Build .......... SUCCESS [0.514s]
[INFO] org.eclipse.e4.tools.css.spy Build ................ SUCCESS [0.418s]
[INFO] org.eclipse.e4.core.tools.feature Build ........... SUCCESS [0.924s]
[INFO] org.eclipse.e4.tools.css.editor.feature Build ..... SUCCESS [0.447s]
[INFO] org.eclipse.e4.tools.css.spy.feature Build ........ SUCCESS [0.272s]
[INFO] org.eclipse.e4.tools.e3x.bridge.feature Build ..... SUCCESS [0.316s]
[INFO] org.eclipse.e4.tools.updatesite Build ............. SUCCESS [36.246s]
[INFO] e4-tools-aggregator ............................... SUCCESS [0.107s]
