.

go/internal/xtracing/tracetest/tracetest.go

@@ -528,7 +528,7 @@ func (t *T) RxEvent(event interface{}) {
 	t.streamTabMu.Unlock()
 
 	if ch == nil {
-		t.fatalfInNonMain("test is no longer running")
+		t.fatalfInNonMain("test failed")
 	}
 
 	// TODO it is possible to empirically detect here if a test incorrectly
@@ -651,7 +651,7 @@ func (t *T) xget1(stream string, eventp interface{}) *Msg {
 	reventp := reflect.ValueOf(eventp)
 	if reventp.Type().Elem() != reflect.TypeOf(msg.Event) {
 		t.queuenak(msg, "unexpected event type")
-		t.Fatalf("%s: expect: %s:  got %#v", ch.name(), reventp.Elem().Type(), msg.Event)
+		t.Fatalf("%s: expect: %s:  got %T %v", ch.name(), reventp.Elem().Type(), msg.Event, msg.Event)
 	}
 
 	// *eventp = msg.Event
@@ -776,8 +776,9 @@ func (t *T) FailNow() {
 		bad += fmt.Sprintf("noone is sending\n")
 	} else {
 		bad += fmt.Sprintf("there are %d pending sender(s) on other channel(s):\n", len(sendv))
+		//bad += fmt.Sprintf("the following send(s) are pending:\n"
 		for _, __ := range sendv {
-			bad += fmt.Sprintf("%s:\t%T %v\n", __.ch.name(), __.msg.Event, __.msg.Event)
+			bad += fmt.Sprintf("%s\t<- %T %v\n", __.ch.name(), __.msg.Event, __.msg.Event)
 		}
 	}