From 089eeae24b660ba22245fd2ae7e55510a0cc34ba Mon Sep 17 00:00:00 2001
From: Matthew Pomes <matthew.pomes@pm.me>
Date: Wed, 12 Jan 2022 12:49:57 -0600
Subject: [PATCH] runtime: add better error message when spawning blocking
 threads (#4398)

---
 tokio/src/runtime/blocking/pool.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tokio/src/runtime/blocking/pool.rs b/tokio/src/runtime/blocking/pool.rs
index 77ab4958683..bb6c1ee6606 100644
--- a/tokio/src/runtime/blocking/pool.rs
+++ b/tokio/src/runtime/blocking/pool.rs
@@ -244,7 +244,7 @@ impl Spawner {
                 rt.blocking_spawner.inner.run(id);
                 drop(shutdown_tx);
             })
-            .unwrap()
+            .expect("OS can't spawn a new worker thread")
     }
 }