var vcsCmd *vcs.Cmd
	var err error
	const allowNesting = true

	wantVCS := false
	switch cfg.BuildBuildvcs {
	case "true":
		wantVCS = true // Include VCS metadata even for tests if requested explicitly; see https://go.dev/issue/52648.
	case "auto":
		wantVCS = autoVCS && !p.IsTestOnly()
	case "false":
	default:
		panic(fmt.Sprintf("unexpected value for cfg.BuildBuildvcs: %q", cfg.BuildBuildvcs))

// line. If a package test fails, go test prints the full test output.
// If invoked with the -bench or -v flag, go test prints the full
// output even for passing package tests, in order to display the
// requested benchmark results or verbose logging. After the package
// tests for all of the listed packages finish, and their output is
// printed, go test prints a final 'FAIL' status if any package test
// has failed.
//