Update error message

Co-authored-by: Joshua Nelson <github@jyn.dev>

src/tools/tidy/src/x_version.rs

@@ -31,6 +31,6 @@ pub fn check(bad: &mut bool) {
             );
         }
     } else {
-        return tidy_error!(bad, "{}", output.status);
+        return tidy_error!(bad, "failed to check version of `x`: {}", output.status);
     }
 }