From 4da5fe7fdbb4b2a257f37fc725a756f01d2927fc Mon Sep 17 00:00:00 2001
From: Camille GILLOT <gillot.camille@gmail.com>
Date: Fri, 15 Nov 2019 21:23:34 +0100
Subject: [PATCH] Fix derive syntax.

---
 src/librustc/ty/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc/ty/mod.rs b/src/librustc/ty/mod.rs
index c9bdf22ca8ed..a54bf5079cac 100644
--- a/src/librustc/ty/mod.rs
+++ b/src/librustc/ty/mod.rs
@@ -1589,8 +1589,8 @@ rustc_index::newtype_index! {
     /// declared, but a type name in a non-zero universe is a placeholder
     /// type -- an idealized representative of "types in general" that we
     /// use for checking generic functions.
-    #[derive(HashStable)]
     pub struct UniverseIndex {
+        derive [HashStable]
         DEBUG_FORMAT = "U{}",
     }
 }