From 5075174c465ee868937517aba69ff5df5878a69d Mon Sep 17 00:00:00 2001
From: Oliver Scherer <github35764891676564198441@oli-obk.de>
Date: Tue, 16 Oct 2018 17:19:25 +0200
Subject: [PATCH] Derives often have very strict bounds

---
 src/bootstrap/cache.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/bootstrap/cache.rs b/src/bootstrap/cache.rs
index 4a50f744e7a..fd9a1be2072 100644
--- a/src/bootstrap/cache.rs
+++ b/src/bootstrap/cache.rs
@@ -169,12 +169,20 @@ fn cmp(&self, other: &Self) -> Ordering {
     }
 }
 
-#[derive(Default)]
 struct TyIntern<T: Hash + Clone + Eq> {
     items: Vec<T>,
     set: HashMap<T, Interned<T>>,
 }
 
+impl<T: Hash + Clone + Eq> Default for TyIntern<T> {
+    fn default() -> Self {
+        TyIntern {
+            items: Vec::new(),
+            set: Default::default(),
+        }
+    }
+}
+
 impl<T: Hash + Clone + Eq> TyIntern<T> {
     fn intern_borrow<B>(&mut self, item: &B) -> Interned<T>
     where
-- 
2.44.0