Description James Blackburn 2010-05-25 13:00:53 EDT

+++ This bug was initially created as a clone of Bug #309126 +++

There are a couple things that could be tidied (see bug 309126 comment 16 points 2 & 5).

existsProblems(...) should probably just #findMaxProblemSeverity rather than fetching and checking all the markers:

protected boolean existsProblems(IProject proj) throws CoreException {
	return proj.findMaxProblemSeverity(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE) >= IMarker.SEVERITY_ERROR;
}

Build before launch shouldn't use the workspace root scheduling rule. This pre-supposes that the builders require this which they may not:
  
  ResourcesPlugin.getWorkspace().run(build, null, IWorkspace.AVOID_UPDATE, monitor);