return;
            }

            if (remoteProcessor == null) {
                completion = workerThreadRegistry.startWorker();
                try {
                    remoteProcessor = forkProcess();
                } catch (RuntimeException e) {
                    completion.leaseFinish();
                    completion = null;
                    throw e;
                }
            }

        def processor = newProcessor(new ForkedTestClasspath(
            appClasspath, appModulepath, implClasspath, implModulepath
        ))

        when:
        processor.forkProcess()

        then:
        1 * workerProcessBuilder.applicationClasspath(_) >> { assert it[0] == appClasspath }
        1 * workerProcessBuilder.applicationModulePath(_) >> { assert it[0] == appModulepath}