registry.markState(address, Busy) >> { throw new EmptyRegistryException("") }

        when:
        updater.onStartActivity()

        then:
        noExceptionThrown()
    }

    def "ignores empty cache on stopping"() {
        given:
        updater.onStart(address)
        registry.remove(address) >> { throw new EmptyRegistryException("") }

        when:
        updater.stop()

        then:

        LOGGER.info("Marking the daemon as busy, address: {}", connectorAddress);
        try {
            daemonRegistry.markState(connectorAddress, Busy);
        } catch (DaemonRegistry.EmptyRegistryException e) {
            LOGGER.warn("Cannot mark daemon as busy because the registry is empty.");
        }
    }

    public void onCompleteActivity() {

    void storeStopEvent(DaemonStopEvent stopEvent);
    List<DaemonStopEvent> getStopEvents();
    void removeStopEvents(Collection<DaemonStopEvent> stopEvents);

    static class EmptyRegistryException extends RuntimeException {
        public EmptyRegistryException(String message) {
            super(message);
        }
    }

Class <org.gradle.launcher.daemon.registry.DaemonInfo> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DaemonInfo.java:0)
Class <org.gradle.launcher.daemon.registry.DaemonRegistry$EmptyRegistryException> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DaemonRegistry.java:0)