This commit syncs Prater

beacon_node/beacon_chain/src/builder.rs

@@ -417,6 +417,12 @@ where
         let (_, updated_builder) = self.set_genesis_state(genesis_state)?;
         self = updated_builder;
 
+        // Build the committee caches before storing. The database assumes that states have
+        // committee caches built before storing.
+        weak_subj_state
+            .build_all_committee_caches(&self.spec)
+            .map_err(|e| format!("Error building caches on checkpoint state: {:?}", e))?;
+
         // Write the state and block non-atomically, it doesn't matter if they're forgotten
         // about on a crash restart.
         store