Running cobertura:html on a project with sub-modules does not generate a complete report

Having multiple projects with inter-dependencies will not produce a complete Cobertura test coverage report.

It seems when more than one project has a dependency on a single project, the reports are either not generated or are not instrumented in the proper place. I've set up a sample project here:

https://github.com/tantastik/sample-buildr-repo

In this sample project there are 3 modules: common, app, webapp.

• 'common' has no project dependencies
• 'app' depends on 'common'
• 'webapp' depends on 'common' and 'app'

When running cobertura:html from the root directory, the subsequent html report does not contain classes from the 'common' project.

If you clone this locally and run "buildr cobertura:html" you will see this behaviour.