// after we drop privileges.
	//
	// TODO(bcmills): Why do we believe that another users will be able to
	// execute a binary in this directory? (It could be mounted noexec.)
	tempDir, err := os.MkdirTemp("", "TestDeathSignal")
	if err != nil {
		t.Fatalf("cannot create temporary directory: %v", err)
	}
	defer os.RemoveAll(tempDir)
	os.Chmod(tempDir, 0755)

	tmpBinary := filepath.Join(tempDir, filepath.Base(os.Args[0]))