From aeac3da2c1e6774d8d2f3569d064fb756b2554ae Mon Sep 17 00:00:00 2001
From: Michael Wright <mikerite@lavabit.com>
Date: Wed, 26 Jun 2019 06:08:33 +0200
Subject: [PATCH] Improve fmt test failure message

---
 tests/fmt.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/fmt.rs b/tests/fmt.rs
index d7544bc50b2..47be4ec125b 100644
--- a/tests/fmt.rs
+++ b/tests/fmt.rs
@@ -16,5 +16,8 @@ fn fmt() {
     println!("stdout: {}", String::from_utf8_lossy(&output.stdout));
     println!("stderr: {}", String::from_utf8_lossy(&output.stderr));
 
-    assert!(output.status.success());
+    assert!(
+        output.status.success(),
+        "Formatting check failed. Run `./util/dev fmt` to update formatting."
+    );
 }