block.waitForAllPendingCalls()

        // simulate another "build" that tries to initialize the cache as well before recognizing that it has been done already
        def cacheAccess = simulateAnotherInitializationOfAlreadyInitializedWorkerClasspathCache()
        cacheAccess.open()
        block.releaseAll()
        build.waitForFinish()

        then:
        noExceptionThrown()

        cleanup:
        cacheAccess?.close()