}
		bytes, err := json.Marshal(v.atom)
		if err != nil {
			return err
		}
		buf.Write(bytes)
		return nil
	}
	err := marshal1(v)
	return buf.Bytes(), err
}

func synthesizeSkipEvent(enc *json.Encoder, pkg, msg string) {
	type event struct {
		Time    time.Time
		Action  string
		Package string
		Output  string `json:",omitempty"`
	}

	end   chan struct{} // a value means cmd ended (or was skipped)
}

// printSkip prints a skip message for all of work.
func (w *work) printSkip(t *tester, msg string) {
	if t.json {
		synthesizeSkipEvent(json.NewEncoder(&w.out), w.dt.name, msg)
		return
	}
	fmt.Fprintln(&w.out, msg)
}

// A distTest is a test run by dist test.
// Each test has a unique name and belongs to a group (heading)