diff --git a/environment.go b/environment.go
index cb5688c..7cdcebc 100644
--- a/environment.go
+++ b/environment.go
@@ -298,7 +298,7 @@ func (this *environment) runRunnable(ctx context.Context, actor Runnable) (stopE
 			return
 		} else {
 			// failure
-			log.Printf("XXX [%s] failed", typ)
+			log.Printf("XXX [%s] failed: %v", typ, err)
 		}
 
 		// restart logic