From 4a95fac48f793a8ad62869e205195dda2c1dfcc1 Mon Sep 17 00:00:00 2001
From: Bryan Helmkamp <bryan@brynary.com>
Date: Sat, 7 Mar 2026 10:38:01 -0500
Subject: [PATCH] Remove unnecessary Vec allocation in debug log

HashMap::keys() already implements Debug, no need to collect into a Vec.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 crates/arc-workflows/src/handler/manager_loop.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/arc-workflows/src/handler/manager_loop.rs b/crates/arc-workflows/src/handler/manager_loop.rs
index 6878029ce..c1a12fc6a 100644
--- a/crates/arc-workflows/src/handler/manager_loop.rs
+++ b/crates/arc-workflows/src/handler/manager_loop.rs
@@ -189,7 +189,7 @@ impl Handler for SubWorkflowHandler {
 
                     tracing::debug!(
                         node = %node.id,
-                        propagated_keys = ?diff.keys().collect::<Vec<_>>(),
+                        propagated_keys = ?diff.keys(),
                         "Sub-workflow context diff filtered"
                     );