hashicorp/packer · error

failed to open zip: %w

Error message

failed to open zip: %w

What it means

Runtime error from extractBinaryFromZip in the hcp-sbom provisioner: the downloaded Packer release zip could not be opened as an archive (zip.OpenReader failed) — a corrupted or truncated download, or an unreadable file path.

Source

Thrown at provisioner/hcp-sbom/provisioner.go:562

		if err := p.runRemoteCmd(ctx, comm, chmodCmd, "chmod scanner binary"); err != nil {
			return "", err
		}

		// Final verify: confirm binary is executable.
		verifyCmd := fmt.Sprintf(`test -x "%s"`, remotePath)
		if err := p.runRemoteCmd(ctx, comm, verifyCmd, "verify scanner is executable"); err != nil {
			return "", fmt.Errorf("scanner binary is not executable at %s after chmod; "+
				"check that /tmp is not mounted noexec on the remote host", remotePath)
		}
	}

	return remotePath, nil
}

func extractBinaryFromZip(zipPath, binaryName string) ([]byte, error) {
	zr, err := zip.OpenReader(zipPath)
	if err != nil {
		return nil, fmt.Errorf("failed to open zip: %w", err)
	}
	defer func() { _ = zr.Close() }()

	for _, f := range zr.File {
		if f.Name != binaryName {
			continue
		}

		rc, err := f.Open()
		if err != nil {
			return nil, fmt.Errorf("failed to open %s from zip: %w", binaryName, err)
		}

		data, readErr := io.ReadAll(rc)
		closeErr := rc.Close()
		if readErr != nil {
			return nil, fmt.Errorf("failed to read %s from zip: %w", binaryName, readErr)
		}

View on GitHub (pinned to eb36e3c3e4)

Solutions

1. Retry the build to re-download the release zip
2. Check disk space and network reliability; verify the zip opens with `unzip -t`

When it happens

Trigger: Thrown at provisioner/hcp-sbom/provisioner.go:562 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hashicorp/packer@eb36e3c3e4 (2026-09-05). Data as JSON: /api/errors/8f7f5dc9e7adb2e1. Report an issue: GitHub.