Set<ResolvedArtifactResult> artifactResults = visitor.getArtifacts();
            Set<Throwable> failures = visitor.getFailures();

            if (!lenient) {
                resolutionHost.rethrowFailure("artifacts", failures);
            }
            return new ArtifactSetResult(artifactResults, failures);
        });
    }

    @Override
    public ResolutionHost getResolutionHost() {

     *
     * @throws ArtifactVariantSelectionException subtypes
     */
    private void maybeThrowResolutionFailures(ResolvedFileCollectionVisitor collectingVisitor) {
        if (!lenient) {
            resolutionHost.rethrowFailure("files", collectingVisitor.getFailures());
        }
    }

    @Override
    protected void appendContents(TreeFormatter formatter) {
        formatter.node("contains: " + getDisplayName());
    }

     *
     * <p>This method does nothing when resolution was successful.</p>
     *
     * @throws ResolveException when the resolve was not successful.
     */
    void rethrowFailure() throws ResolveException;

    /**
     * Returns the files for the configuration dependencies.
     *
     * @return The artifact files of the specified dependencies.

        this.executing = executing;
    }

    @Override
    public Throwable getFailure() {
        return failure;
    }

    @Override
    public void rethrowFailure() {
        if (failure != null) {
            throw failure;
        }
    }

    @Override
    public boolean getSkipped() {
        return outcome != null && outcome.isSkipped();
    }

                .setStandardOutput(output)
                .workingDir(new File(".").absoluteFile) //does not matter
                .build()
        e.start()
        def result = e.waitForFinish()
        result.rethrowFailure()

        return output.toString()
    }

    private static Object[] killArgs(Long pid, boolean killTree) {
        if (OperatingSystem.current().unix) {
            // start shell, read script from stdin

        project.gradle.services.get(BuildOutputCleanupRegistry).resolveOutputs()
        executionServices.get(TaskExecuter).execute((TaskInternal) task, (TaskStateInternal) task.state, taskExecutionContext)
        task.state.rethrowFailure()
    }

    protected static boolean assertHasMatchingCause(Throwable t, Predicate<String> predicate) {
        if (t == null) {
            return false
        }

        def cause = t

        Stub(TaskRequiredServices)
    }

    void failure(TaskInternal task, final RuntimeException failure) {
        task.state.getFailure() >> failure
        task.state.rethrowFailure() >> { throw failure }
    }

    private static class MockLock implements ResourceLock {
        final Thread owner = Thread.currentThread()
        final ProjectInternal project
        boolean locked

        def results = dependencyResolver.resolveGraph(resolveContext)

        then:
        def resolvedConfig = results.legacyResults.resolvedConfiguration
        !resolvedConfig.hasError()
        resolvedConfig.rethrowFailure()

        resolvedConfig.getFiles(Specs.<Dependency> satisfyAll()).isEmpty()
        resolvedConfig.getFirstLevelModuleDependencies().isEmpty()
        resolvedConfig.getResolvedArtifacts().isEmpty()

            stoppable.requestStop();
        }
    }

    private void onProcessStop(ExecResult execResult) {
        lock.lock();
        try {
            try {
                execResult.rethrowFailure().assertNormalExitValue();
            } catch (Throwable e) {
                processFailure = e;
            }
            running = false;
            condition.signalAll();
        } finally {

                // Exit code 1 = failed test(s)
                // anything else is considered an execution failure
                if (result.getExitValue() != 0 && result.getExitValue() != 1) {
                    result.rethrowFailure().assertNormalExitValue();
                }
            } catch (ExecException e) {
                stdOut.endOfStream(e);
                stdErr.endOfStream(null);
            } finally {