From bfbdd7112b0a45b26c97d67731a4aa670423a0b9 Mon Sep 17 00:00:00 2001
From: Deirdre Connolly <deirdre@zfnd.org>
Date: Thu, 5 Nov 2020 08:36:58 -0500
Subject: [PATCH] Add message if assertion that sled map keys don't collide
 fails

Co-authored-by: teor <teor@riseup.net>
---
 zebra-state/src/sled_state/sled_format.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zebra-state/src/sled_state/sled_format.rs b/zebra-state/src/sled_state/sled_format.rs
index c8cdb212..d9b65cf3 100644
--- a/zebra-state/src/sled_state/sled_format.rs
+++ b/zebra-state/src/sled_state/sled_format.rs
@@ -246,7 +246,7 @@ impl SledSerialize for sled::transaction::TransactionalTree {
         let value_bytes = value.into_ivec();
         let previous = self.insert(key_bytes, value_bytes)?;
 
-        assert!(previous.is_none());
+        assert!(previous.is_none(), format!("state insertion error: duplicate key {:?} when inserting value {:?}", key, value));
 
         Ok(())
     }