Thanks for the PR! I'm guessing there was an instance you ran into because of this. Have you been able to test it out with a local patch override in your Cargo.toml?

Yes. I replace reqwest::Error::is_timeout with following ErrorExt::is_timeout2, and our customed retry logic works.

 pub trait ErrorExt {
     ...
+    fn is_timeout2(&self) -> bool;
 }

@@ -64,6 +69,13 @@ impl ErrorExt for reqwest::Error {
             })
     }

+    fn is_timeout2(&self) -> bool {
+        self.is_timeout()
+            || (self.is_request()
+                && get_source_error_type::<hyper::Error>(self)
+                    .is_some_and(hyper::Error::is_timeout))
+    }
+

Some background: the request error happens when the iOS phone turns on/off airplane mode, but reqwest::Error::is_timeout goes false:

error sending request for url (https://...): http2 error: keep-alive timed out