then:
        configurationCache.assertStateStored()

        and:
        buildDir.assertDoesNotExist()

        when:
        buildDir.mkdir()
        configurationCacheRun 'clean'

        then:
        configurationCache.assertStateLoaded()

        and:
        buildDir.assertDoesNotExist()
    }

        and:
        // start as new process so journal is not restored from in-memory cache
        executer.withTasks("help").start().waitForFinish()

        then:
        outputDir1.assertDoesNotExist()
        outputDir2.assertExists()
        gcFile.lastModified() >= SECONDS.toMillis(beforeCleanup)
    }

    def "cleans up cache when retention is configured less than the default"() {
        given: