diff --git a/runner/sidecar/source/cron/cron.go b/runner/sidecar/source/cron/cron.go
index bfbb0c91..5d75cbc7 100644
--- a/runner/sidecar/source/cron/cron.go
+++ b/runner/sidecar/source/cron/cron.go
@@ -32,7 +32,9 @@ func New(x dfv1.Cron, f source.Func) (source.Interface, error) {
 
 	_, err := crn.AddFunc(x.Schedule, func() {
 		msg := []byte(time.Now().Format(x.Layout))
-		_ = f(context.Background(), msg)
+		if err := f(context.Background(), msg); err != nil {
+			logger.Error(err, "failed to process message")
+		}
 	})
 	if err != nil {
 		return nil, fmt.Errorf("failed to schedule cron %q: %w", x.Schedule, err)
diff --git a/runner/sidecar/source/db/db.go b/runner/sidecar/source/db/db.go
index f6069b27..3cfa9592 100644
--- a/runner/sidecar/source/db/db.go
+++ b/runner/sidecar/source/db/db.go
@@ -80,7 +80,7 @@ func New(ctx context.Context, secretInterface corev1.SecretInterface, clusterNam
 					offset = fmt.Sprintf("%v", d[x.OffsetColumn])
 					return nil
 				}); err != nil {
-					logger.Error(err, "failed to process data query: %w", err)
+					logger.Error(err, "failed to process data query")
 				}
 			}
 		}
@@ -196,7 +196,7 @@ func queryData(ctx context.Context, db *sql.DB, query, offsetColumn, offset stri
 			}
 		}
 		if err = f(entry); err != nil {
-			logger.Error(err, "failed process data: %w", err)
+			logger.Error(err, "failed to process message")
 		}
 	}
 	return nil
diff --git a/runner/sidecar/source/kafka/handler.go b/runner/sidecar/source/kafka/handler.go
index fd3ef0cf..2a2b7d70 100644
--- a/runner/sidecar/source/kafka/handler.go
+++ b/runner/sidecar/source/kafka/handler.go
@@ -26,6 +26,7 @@ func (h handler) ConsumeClaim(sess sarama.ConsumerGroupSession, claim sarama.Con
 	logger.Info("starting consuming claim", "partition", claim.Partition())
 	for msg := range claim.Messages() {
 		if err := h.f(sess.Context(), msg.Value); err != nil {
+			logger.Error(err, "failed to process message")
 		} else {
 			sess.MarkMessage(msg, "")
 		}
diff --git a/runner/sidecar/source/stan/stan.go b/runner/sidecar/source/stan/stan.go
index 9ac3b6be..ec088c60 100644
--- a/runner/sidecar/source/stan/stan.go
+++ b/runner/sidecar/source/stan/stan.go
@@ -54,7 +54,7 @@ func New(ctx context.Context, secretInterface corev1.SecretInterface, clusterNam
 		logger.Info("subscribing to STAN queue", "source", sourceName, "queueName", queueName)
 		sub, err := conn.QueueSubscribe(x.Subject, queueName, func(msg *stan.Msg) {
 			if err := f(context.Background(), msg.Data); err != nil {
-				// noop
+				logger.Error(err, "failed to process message")
 			} else if err := msg.Ack(); err != nil {
 				logger.Error(err, "failed to ack message", "source", sourceName)
 			}