server.expect(server.post(backingRepo.getName() + "/git-upload-pack", new ErroringAction<HttpExchange>() {
            @Override
            protected void doExecute(HttpExchange httpExchange) throws Exception {
                httpExchange.getResponseHeaders().add("content-type", "application/x-git-upload-pack-result");
                httpExchange.sendResponseHeaders(200, 0);

        def archName = "test.${taskName.toLowerCase()}"
        and:
        buildFile << """
            task pack(type: $taskName) {
                archiveFileName = "$archName"
                destinationDirectory = projectDir
                from 'parent'
            }
            """
        when:
        run "pack"
        file(archName).usingNativeTools()."$unpackMethod"(file("build"))
        then:

import org.junit.jupiter.api.Test

class HpackTest {
  private val bytesIn = Buffer()
  private var hpackReader: Hpack.Reader? = null
  private val bytesOut = Buffer()
  private var hpackWriter: Hpack.Writer? = null

  @BeforeEach
  fun reset() {
    hpackReader = newReader(bytesIn)
    hpackWriter = Hpack.Writer(4096, false, bytesOut)
  }

  /**

  // CHECK-NOT: "tf.VarHandleOp"
  // CHECK-NOT: "tf.ReadVariableOp"
  // CHECK: %[[CONST:.*]] = "tf.Const"()
  // CHECK: %[[ADD:[0-9]*]] = "tf.AddV2"(%arg1, %[[CONST]])
  // CHECK: %[[PACK:[0-9]*]] = "tf.Pack"(%[[CONST]], %[[ADD]])
  // CHECK: return %[[PACK]]
  %0 = "tf.Const"() {value = dense<4.200000e+01> : tensor<f32>} : () -> tensor<f32>
  %1 = "tf.VarHandleOp"() {container = "", shared_name = "x"} : () -> tensor<!tf_type.resource<tensor<f32>>>

import okio.ByteString

/**
 * This class was originally composed from the following classes in
 * [Twitter Hpack][twitter_hpack].
 *
 *  * `com.twitter.hpack.HuffmanEncoder`
 *  * `com.twitter.hpack.HuffmanDecoder`
 *  * `com.twitter.hpack.HpackUtil`
 *
 * [twitter_hpack]: https://github.com/twitter/hpack
 */
object Huffman {
  // Appendix C: Huffman Codes

[!compiler:gc] skip
[short] skip

# Outside of GOROOT, our vendored packages should be reported as part of the standard library.
go list -f '{{if .Standard}}{{.ImportPath}}{{end}}' std cmd
stdout ^vendor/golang\.org/x/net/http2/hpack
stdout ^cmd/vendor/golang\.org/x/arch/x86/x86asm
! stdout ^golang\.org/x/

# The dependencies of those packages should also be vendored.
go list -deps vendor/golang.org/x/crypto/chacha20

        """

        then:
        fails "customTask"

        failureHasCause(~/Failed to store cache entry $CACHE_KEY_PATTERN for task ':customTask': Could not pack tree 'output': Expected '${escapeString(file('build/output'))}' to be a file/)
        errorOutput =~ /Could not pack tree 'output'/
        def cacheKey = cacheOperations.getCacheKeyForTask(":customTask")
        !localCache.hasCacheEntry(cacheKey)

// If both name and value match, i is the matched index and nameValueMatch
// becomes true. If only name matches, i points to that index and
// nameValueMatch becomes false.
//
// The returned index is a 1-based HPACK index. For dynamic tables, HPACK says
// that index 1 should be the newest entry, but t.ents[0] is the oldest entry,
// meaning t.ents is reversed for dynamic tables. Hence, when t is a dynamic

    private final Packer delegate;

    public SnappyCommonsPacker(Packer delegate) {
        this.delegate = delegate;
    }

    @Override
    public void pack(List<DataSource> inputs, DataTarget output) throws IOException {
        delegate.pack(inputs, new DelegatingDataTarget(output) {
            @Override
            public OutputStream openOutput() throws IOException {

env GOBIN=$WORK/bin
! go install mycmd
! exists $GOBIN/linux_$GOARCH

# The install directory for a cross-compiled standard command should include GOARCH.
go list -f '{{.Target}}'  cmd/pack
stdout ${GOROOT}[/\\]pkg[/\\]tool[/\\]${GOOS}_${GOARCH}[/\\]pack$

-- mycmd/x.go --
package main