given:
        def listener = Mock(ProgressListener)
        def adapter = createAdapter(listener)

        when:
        def buildDesc = buildDescriptor(1, 'some build')
        def finishEvent = buildFinishEvent(999, 'finish', buildDesc)

        adapter.onEvent(finishEvent)

        then:
        def e = thrown(IllegalStateException)
        e.message.contains('not available')
    }