From a184e31757839ee93b5566784967203a02b65caf Mon Sep 17 00:00:00 2001
From: Alexandre Courbot <acourbot@chromium.org>
Date: Wed, 8 Dec 2021 13:18:27 +0900
Subject: [PATCH] crosvm: display error chain when VM fails

Use the '{:#}' formatter to display the complete error chain. This turns
the following error:

	crosvm has exited with error: failed to set up virtio networking

into the more helpful:

	crosvm has exited with error: failed to set up virtio
	networking: failed to open tap device: failed to create tap
	interface: Operation not permitted (os error 1)

BUG=None
TEST=cargo build

Change-Id: I65126af54a9a3cef7823e55c021dcd591660077a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3320913
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Alexandre Courbot <acourbot@chromium.org>
---
 src/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index 67fe94d60b..ecce75cc12 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2436,7 +2436,7 @@ iommu=on|off - indicates whether to enable virtio IOMMU for this device"),
                 Ok(())
             }
             Err(e) => {
-                error!("crosvm has exited with error: {}", e);
+                error!("crosvm has exited with error: {:#}", e);
                 Err(())
             }
         },