then:
        conditions.eventually {
            rebuiltBecauseOfChange()
        }

        cleanup:
        cancellationToken.cancel()
        buildExits(runningBuild)
    }

    private void buildExits(Future<?> runningBuild) {
        runningBuild.get(1, TimeUnit.SECONDS)
    }

    private Future<?> startBuild() {
        return executorService.submit {