From 1c02e380fbd54a0c6ffa97fb165d245c3686bc9d Mon Sep 17 00:00:00 2001
From: Yi LIU <yi@quantstamp.com>
Date: Thu, 12 Feb 2026 20:13:54 +0800
Subject: [PATCH] Handle JoinError in registry download task results

The unwrap() on the JoinResult from spawned download tasks would panic
if a task panicked or was cancelled. Now maps the JoinError to a proper
RegistryDownloadFailure error variant instead.
---
 crates/wac-resolver/src/registry.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/crates/wac-resolver/src/registry.rs b/crates/wac-resolver/src/registry.rs
index 8169497..53a5eec 100644
--- a/crates/wac-resolver/src/registry.rs
+++ b/crates/wac-resolver/src/registry.rs
@@ -153,7 +153,9 @@ impl RegistryPackageResolver {
         let mut finished = 0;
 
         while let Some(res) = tasks.next().await {
-            let (index, download) = res.unwrap()?;
+            let (index, download) = res.map_err(|e| Error::RegistryDownloadFailure {
+                source: anyhow::anyhow!("download task panicked: {e}"),
+            })??;
 
             finished += 1;