assert ${debug == _ } || gradle.startParameter.configurationCacheDebug == ${debug}
            assert ${recreate == _ } || gradle.startParameter.configurationCacheRecreateCache == ${recreate}
        }
        """

        when:
        run(task, *options)

        then:
        if (ccOn) {

import java.io.File


internal
inline fun <T> DirectoryProperty.withOutputDirectory(action: (File) -> T): T =
    asFile.get().let { outputDir ->
        recreate(outputDir)
        action(outputDir)
    }


internal
fun recreate(outputDir: File) {
    outputDir.deleteRecursively()
    outputDir.mkdirs()

        this.idFactory = idFactory;
    }

    /**
     * Create a task identity.
     */
    public <T extends Task> TaskIdentity<T> create(String name, Class<T> type, ProjectInternal project) {
        long id = idFactory.createId();
        return doCreate(name, type, project, id);
    }

    /**
     * Recreate a task identity.
     * <p>

    fun run() {
        outputDir.get().asFile.apply {
            recreate()
            writeFiles()
        }
    }

    protected
    fun File.writeFile(relativePath: String, text: String) {
        resolve(relativePath).apply {
            parentFile.mkdirs()
            writeText(text)
        }
    }

    private
    fun File.recreate() {
        deleteRecursively()
        mkdirs()
    }

		}, index)
	}

	var recreate bool
	errs := g.Wait()
	for index, err := range errs {
		if errors.Is(err, errVolumeNotEmpty) {
			recreate = true
		}
		if err == nil && recreate {
			// ignore any errors
			localDrives[index].MakeVol(ctx, bucket)
		}
	}

	// Since we recreated buckets and error was `not-empty`, return not-empty.
	if recreate {
		return errVolumeNotEmpty

To run locally, you will need to set this value whatever version of the build scan plugin you want to test with (whatever value is in source control is likely quite out of date).  Note also that when this value changes, you will need to clean and recreate the test projects in `templates.gradle`....

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Recreate a getsystemcfg syscall handler instead of
// using the one provided by x/sys/unix to avoid having
// the dependency between them. (See golang.org/issue/32102)
// Moreover, this file will be used during the building of
// gccgo's libgo and thus must not used a CGo method.

 * limitations under the License.
 */

package org.gradle.internal.classloader;

import java.io.Serializable;

/**
 * An immutable description of a ClassLoader hierarchy that can be used to recreate the hierarchy in a different process.
 *
 * Subclasses should implement equals() and hashCode(), so that the spec can be used as a hashmap key.
 */
public abstract class ClassLoaderSpec implements Serializable {

        n1.toString() == "a"
        n2.toString() == "b"

        n1.is(factory.named(Named, "a"))
        n2.is(factory.named(Named, "b"))
    }

    def "can unpack and recreate Named instance"() {
        expect:
        def n1 = factory.named(Named, "a")
        n1 instanceof Managed
        n1.publicType() == Named
        n1.isImmutable()
        def state = n1.unpackState()

 */
@ThreadSafe
public interface CrossBuildInMemoryCache<K, V> extends Cache<K, V> {
    /**
     * Locates the given entry, using the supplied factory when the entry is not present or has been discarded, to recreate the entry in the cache.
     *
     * <p>Implementations must prevent more than one thread calculating the same key at the same time.
     */
    @Override
    V get(K key, Function<? super K, ? extends V> factory);