From 71e63f8d10f789b697548bfaa1ef714f049fe226 Mon Sep 17 00:00:00 2001
From: jif-oai <jif@openai.com>
Date: Wed, 4 Feb 2026 17:59:22 +0000
Subject: [PATCH] fix: flaky test (#10644)

---
 codex-rs/core/tests/suite/tool_parallelism.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/codex-rs/core/tests/suite/tool_parallelism.rs b/codex-rs/core/tests/suite/tool_parallelism.rs
index 955b2f7ec..0df8f8cbc 100644
--- a/codex-rs/core/tests/suite/tool_parallelism.rs
+++ b/codex-rs/core/tests/suite/tool_parallelism.rs
@@ -149,6 +149,8 @@ async fn shell_tools_run_in_parallel() -> anyhow::Result<()> {
 
     let shell_args = json!({
         "command": "sleep 0.3",
+        // Avoid user-specific shell startup cost (e.g. zsh profile scripts) in timing assertions.
+        "login": false,
         "timeout_ms": 1_000,
     });
     let args_one = serde_json::to_string(&shell_args)?;