From f2ef8bf776b7fd8aed8654bbad3c2a8b042a89a7 Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Thu, 10 Jun 2021 20:40:52 -0700
Subject: [PATCH] compiletest: display the error if rustfix fails

---
 src/tools/compiletest/src/runtest.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs
index 02dffaab7b6..6a1faee1d8e 100644
--- a/src/tools/compiletest/src/runtest.rs
+++ b/src/tools/compiletest/src/runtest.rs
@@ -3328,8 +3328,11 @@ fn run_ui_test(&self) {
                 },
             )
             .unwrap();
-            let fixed_code = apply_suggestions(&unfixed_code, &suggestions).unwrap_or_else(|_| {
-                panic!("failed to apply suggestions for {:?} with rustfix", self.testpaths.file)
+            let fixed_code = apply_suggestions(&unfixed_code, &suggestions).unwrap_or_else(|e| {
+                panic!(
+                    "failed to apply suggestions for {:?} with rustfix: {}",
+                    self.testpaths.file, e
+                )
             });
 
             errors += self.compare_output("fixed", &fixed_code, &expected_fixed);