Add panic message to select_ok

rust-lang · Oct 7, 2019 · 8f95de5 · 8f95de5
1 parent 1f9c200
commit 8f95de5
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/futures-util/src/try_future/select_ok.rs b/futures-util/src/try_future/select_ok.rs
@@ -35,7 +35,7 @@ pub fn select_ok<I>(iter: I) -> SelectOk<I::Item>
     let ret = SelectOk {
         inner: iter.into_iter().collect()
     };
-    assert!(!ret.inner.is_empty());
+    assert!(!ret.inner.is_empty(), "iterator provided to select_ok was empty");
     ret
 }