Index: reqwest/tests/timeouts.rs
===================================================================
--- reqwest.orig/tests/timeouts.rs
+++ reqwest/tests/timeouts.rs
@@ -85,6 +85,17 @@ async fn connect_timeout() {
 
     let err = res.unwrap_err();
 
+    // some networks (particularly those used by Ubuntu autopkgtest runners) 
+    // refuse connections to unknown IPs instead of rejecting them, tolerate this.
+    use std::error::Error;
+    let mut source = err.source();
+    while let Some(err) = source {
+        if let Some(io) = err.downcast_ref::<std::io::Error>() {
+            if io.kind() == std::io::ErrorKind::ConnectionRefused { return; }
+        }
+        source = err.source();
+    }
+
     assert!(err.is_connect() && err.is_timeout(),"assertion failed err.is_connect() && err.is_timeout(), err={:?}",err);
 }