registry-watcher: when setting the last-seen ref, first set the db

Author: syphar

src/build_queue.rs

@@ -300,15 +300,15 @@ impl BuildQueue {
             }
         }
 
-        // store the last seen reference as git reference in
-        // the local crates.io index repo.
-        diff.set_last_seen_reference(oid)?;
-
         // additionally set the reference in the database
         // so this survives recreating the registry watcher
         // server.
         self.set_last_seen_reference(oid)?;
 
+        // store the last seen reference as git reference in
+        // the local crates.io index repo.
+        diff.set_last_seen_reference(oid)?;
+
         Ok(crates_added)
     }