diff --git a/libraries/chain/block_state.cpp b/libraries/chain/block_state.cpp
index 369d090341..fd614a6118 100644
--- a/libraries/chain/block_state.cpp
+++ b/libraries/chain/block_state.cpp
@@ -88,7 +88,7 @@ namespace eosio { namespace chain {
 
    block_state::block_state( pending_block_header_state&& cur,
                              signed_block_ptr&& b,
-                             vector<transaction_metadata_ptr>&& trx_metas,
+                             deque<transaction_metadata_ptr>&& trx_metas,
                              const protocol_feature_set& pfs,
                              const std::function<void( block_timestamp_type,
                                                        const flat_set<digest_type>&,
diff --git a/libraries/chain/controller.cpp b/libraries/chain/controller.cpp
index aa5c08c4c0..7586eb2cb5 100644
--- a/libraries/chain/controller.cpp
+++ b/libraries/chain/controller.cpp
@@ -121,16 +121,17 @@ struct building_block {
    std::optional<producer_authority_schedule> _new_pending_producer_schedule;
    vector<digest_type>                        _new_protocol_feature_activations;
    size_t                                     _num_new_protocol_features_that_have_activated = 0;
-   vector<transaction_metadata_ptr>           _pending_trx_metas;
-   vector<transaction_receipt>                _pending_trx_receipts;
-   vector<digest_type>                        _action_receipt_digests;
+   deque<transaction_metadata_ptr>            _pending_trx_metas;
+   deque<transaction_receipt>                 _pending_trx_receipts;
+   deque<digest_type>                         _pending_trx_receipt_digests;
+   deque<digest_type>                         _action_receipt_digests;
    std::optional<checksum256_type>            _transaction_mroot;
 };
 
 struct assembled_block {
    block_id_type                     _id;
    pending_block_header_state        _pending_block_header_state;
-   vector<transaction_metadata_ptr>  _trx_metas;
+   deque<transaction_metadata_ptr>   _trx_metas;
    signed_block_ptr                  _unsigned_block;
 
    // if the _unsigned_block pre-dates block-signing authorities this may be present.
@@ -165,17 +166,7 @@ struct pending_state {
       return std::get<assembled_block>(_block_stage)._pending_block_header_state;
    }
 
-   const vector<transaction_receipt>& get_trx_receipts()const {
-      if( std::holds_alternative<building_block>(_block_stage) )
-         return std::get<building_block>(_block_stage)._pending_trx_receipts;
-
-      if( std::holds_alternative<assembled_block>(_block_stage) )
-         return std::get<assembled_block>(_block_stage)._unsigned_block->transactions;
-
-      return std::get<completed_block>(_block_stage)._block_state->block->transactions;
-    }
-
-   vector<transaction_metadata_ptr> extract_trx_metas() {
+   deque<transaction_metadata_ptr> extract_trx_metas() {
       if( std::holds_alternative<building_block>(_block_stage) )
          return std::move( std::get<building_block>(_block_stage)._pending_trx_metas );
 
@@ -1074,18 +1065,20 @@ struct controller_impl {
    // The returned scoped_exit should not exceed the lifetime of the pending which existed when make_block_restore_point was called.
    fc::scoped_exit<std::function<void()>> make_block_restore_point() {
       auto& bb = std::get<building_block>(pending->_block_stage);
-      auto orig_block_transactions_size = bb._pending_trx_receipts.size();
-      auto orig_state_transactions_size = bb._pending_trx_metas.size();
+      auto orig_trx_receipts_size           = bb._pending_trx_receipts.size();
+      auto orig_trx_metas_size              = bb._pending_trx_metas.size();
+      auto orig_trx_receipt_digests_size    = bb._pending_trx_receipt_digests.size();
       auto orig_action_receipt_digests_size = bb._action_receipt_digests.size();
-
       std::function<void()> callback = [this,
-                                        orig_block_transactions_size,
-                                        orig_state_transactions_size,
-                                        orig_action_receipt_digests_size]()
+            orig_trx_receipts_size,
+            orig_trx_metas_size,
+            orig_trx_receipt_digests_size,
+            orig_action_receipt_digests_size]()
       {
          auto& bb = std::get<building_block>(pending->_block_stage);
-         bb._pending_trx_receipts.resize(orig_block_transactions_size);
-         bb._pending_trx_metas.resize(orig_state_transactions_size);
+         bb._pending_trx_receipts.resize(orig_trx_receipts_size);
+         bb._pending_trx_metas.resize(orig_trx_metas_size);
+         bb._pending_trx_receipt_digests.resize(orig_trx_receipt_digests_size);
          bb._action_receipt_digests.resize(orig_action_receipt_digests_size);
       };
 
@@ -1437,6 +1430,7 @@ struct controller_impl {
       r.cpu_usage_us         = cpu_usage_us;
       r.net_usage_words      = net_usage_words;
       r.status               = status;
+      std::get<building_block>(pending->_block_stage)._pending_trx_receipt_digests.emplace_back( r.digest() );
       return r;
    }
 
@@ -1689,7 +1683,7 @@ struct controller_impl {
             });
          }
 
-         const auto& gpo = db.get<global_property_object>();
+         const auto& gpo = self.get_global_properties();
 
          if( gpo.proposed_schedule_block_num && // if there is a proposed schedule that was proposed in a block ...
              ( *gpo.proposed_schedule_block_num <= pbhs.dpos_irreversible_blocknum ) && // ... that has now become irreversible ...
@@ -1724,7 +1718,7 @@ struct controller_impl {
                });
             in_trx_requiring_checks = true;
             auto trace = push_transaction( onbtrx, fc::time_point::maximum(), fc::microseconds::maximum(),
-                                           self.get_global_properties().configuration.min_transaction_cpu_usage, true, 0 );
+                                           gpo.configuration.min_transaction_cpu_usage, true, 0 );
             if( trace->except ) {
                wlog("onblock ${block_num} is REJECTING: ${entire_trace}",("block_num", head->block_num + 1)("entire_trace", trace));
             }
@@ -1774,7 +1768,7 @@ struct controller_impl {
 
       // Create (unsigned) block:
       auto block_ptr = std::make_shared<signed_block>( pbhs.make_block_header(
-         bb._transaction_mroot ? *bb._transaction_mroot : calculate_trx_merkle( bb._pending_trx_receipts ),
+         merkle( std::move( std::get<building_block>(pending->_block_stage)._pending_trx_receipt_digests ) ),
          merkle( std::move( std::get<building_block>(pending->_block_stage)._action_receipt_digests ) ),
          bb._new_pending_producer_schedule,
          std::move( bb._new_protocol_feature_activations ),
@@ -1978,8 +1972,8 @@ struct controller_impl {
          transaction_trace_ptr trace;
 
          size_t packed_idx = 0;
+         const auto& trx_receipts = std::get<building_block>(pending->_block_stage)._pending_trx_receipts;
          for( const auto& receipt : b->transactions ) {
-            const auto& trx_receipts = std::get<building_block>(pending->_block_stage)._pending_trx_receipts;
             auto num_pending_receipts = trx_receipts.size();
             if( std::holds_alternative<packed_transaction>(receipt.trx) ) {
                const auto& trx_meta = ( use_bsp_cached ? bsp->trxs_metas().at( packed_idx )
@@ -2269,8 +2263,8 @@ struct controller_impl {
 
    } /// push_block
 
-   vector<transaction_metadata_ptr> abort_block() {
-      vector<transaction_metadata_ptr> applied_trxs;
+   deque<transaction_metadata_ptr> abort_block() {
+      deque<transaction_metadata_ptr> applied_trxs;
       if( pending ) {
          applied_trxs = pending->extract_trx_metas();
          pending.reset();
@@ -2279,9 +2273,8 @@ struct controller_impl {
       return applied_trxs;
    }
 
-   static checksum256_type calculate_trx_merkle( const vector<transaction_receipt>& trxs ) {
-      vector<digest_type> trx_digests;
-      trx_digests.reserve( trxs.size() );
+   static checksum256_type calculate_trx_merkle( const deque<transaction_receipt>& trxs ) {
+      deque<digest_type> trx_digests;
       for( const auto& a : trxs )
          trx_digests.emplace_back( a.digest() );
 
@@ -2800,7 +2793,7 @@ void controller::commit_block() {
    my->commit_block(true);
 }
 
-vector<transaction_metadata_ptr> controller::abort_block() {
+deque<transaction_metadata_ptr> controller::abort_block() {
    return my->abort_block();
 }
 
@@ -2963,11 +2956,6 @@ std::optional<block_id_type> controller::pending_producer_block_id()const {
    return my->pending->_producer_block_id;
 }
 
-const vector<transaction_receipt>& controller::get_pending_trx_receipts()const {
-   EOS_ASSERT( my->pending, block_validate_exception, "no pending block" );
-   return my->pending->get_trx_receipts();
-}
-
 uint32_t controller::last_irreversible_block_num() const {
    return my->fork_db.root()->block_num;
 }
diff --git a/libraries/chain/include/eosio/chain/abi_serializer.hpp b/libraries/chain/include/eosio/chain/abi_serializer.hpp
index 01551e9ff6..6b4a7ea542 100644
--- a/libraries/chain/include/eosio/chain/abi_serializer.hpp
+++ b/libraries/chain/include/eosio/chain/abi_serializer.hpp
@@ -366,6 +366,23 @@ namespace impl {
          mvo(name, std::move(array));
       }
 
+      /**
+      * template which overloads add for deques of types which contain ABI information in their trees
+      * for these members we call ::add in order to trigger further processing
+      */
+      template<typename M, typename Resolver, require_abi_t<M> = 1>
+      static void add( mutable_variant_object &mvo, const char* name, const deque<M>& v, Resolver resolver, abi_traverse_context& ctx )
+      {
+         auto h = ctx.enter_scope();
+         deque<fc::variant> array;
+
+         for (const auto& iter: v) {
+            mutable_variant_object elem_mvo;
+            add(elem_mvo, "_", iter, resolver, ctx);
+            array.emplace_back(std::move(elem_mvo["_"]));
+         }
+         mvo(name, std::move(array));
+      }
       /**
        * template which overloads add for shared_ptr of types which contain ABI information in their trees
        * for these members we call ::add in order to trigger further processing
@@ -730,6 +747,24 @@ namespace impl {
          }
       }
 
+ /**
+  * template which overloads extract for deque of types which contain ABI information in their trees
+  * for these members we call ::extract in order to trigger further processing
+  */
+      template<typename M, typename Resolver, require_abi_t<M> = 1>
+      static void extract( const fc::variant& v, deque<M>& o, Resolver resolver, abi_traverse_context& ctx )
+      {
+         auto h = ctx.enter_scope();
+         const variants& array = v.get_array();
+         o.clear();
+         for( auto itr = array.begin(); itr != array.end(); ++itr ) {
+            M o_iter;
+            extract(*itr, o_iter, resolver, ctx);
+            o.emplace_back(std::move(o_iter));
+         }
+      }
+
+
       /**
        * template which overloads extract for shared_ptr of types which contain ABI information in their trees
        * for these members we call ::extract in order to trigger further processing
diff --git a/libraries/chain/include/eosio/chain/block.hpp b/libraries/chain/include/eosio/chain/block.hpp
index b523f8af55..ab06da5d42 100644
--- a/libraries/chain/include/eosio/chain/block.hpp
+++ b/libraries/chain/include/eosio/chain/block.hpp
@@ -97,7 +97,7 @@ namespace eosio { namespace chain {
       signed_block& operator=(signed_block&&) = default;
       signed_block clone() const { return *this; }
 
-      vector<transaction_receipt>   transactions; /// new or generated transactions
+      deque<transaction_receipt>   transactions; /// new or generated transactions
       extensions_type               block_extensions;
 
       flat_multimap<uint16_t, block_extension> validate_and_extract_extensions()const;
diff --git a/libraries/chain/include/eosio/chain/block_state.hpp b/libraries/chain/include/eosio/chain/block_state.hpp
index ad0a695a5a..4772094739 100644
--- a/libraries/chain/include/eosio/chain/block_state.hpp
+++ b/libraries/chain/include/eosio/chain/block_state.hpp
@@ -19,7 +19,7 @@ namespace eosio { namespace chain {
 
       block_state( pending_block_header_state&& cur,
                    signed_block_ptr&& b, // unsigned block
-                   vector<transaction_metadata_ptr>&& trx_metas,
+                   deque<transaction_metadata_ptr>&& trx_metas,
                    const protocol_feature_set& pfs,
                    const std::function<void( block_timestamp_type,
                                              const flat_set<digest_type>&,
@@ -44,24 +44,24 @@ namespace eosio { namespace chain {
       bool is_valid()const { return validated; }
       bool is_pub_keys_recovered()const { return _pub_keys_recovered; }
 
-      vector<transaction_metadata_ptr> extract_trxs_metas() {
+      deque<transaction_metadata_ptr> extract_trxs_metas() {
          _pub_keys_recovered = false;
          auto result = std::move( _cached_trxs );
          _cached_trxs.clear();
          return result;
       }
-      void set_trxs_metas( vector<transaction_metadata_ptr>&& trxs_metas, bool keys_recovered ) {
+      void set_trxs_metas( deque<transaction_metadata_ptr>&& trxs_metas, bool keys_recovered ) {
          _pub_keys_recovered = keys_recovered;
          _cached_trxs = std::move( trxs_metas );
       }
-      const vector<transaction_metadata_ptr>& trxs_metas()const { return _cached_trxs; }
+      const deque<transaction_metadata_ptr>& trxs_metas()const { return _cached_trxs; }
 
       bool                                                validated = false;
 
       bool                                                _pub_keys_recovered = false;
       /// this data is redundant with the data stored in block, but facilitates
       /// recapturing transactions when we pop a block
-      vector<transaction_metadata_ptr>                    _cached_trxs;
+      deque<transaction_metadata_ptr>                    _cached_trxs;
    };
 
    using block_state_ptr = std::shared_ptr<block_state>;
diff --git a/libraries/chain/include/eosio/chain/controller.hpp b/libraries/chain/include/eosio/chain/controller.hpp
index d3b4bf2735..6a2092618b 100644
--- a/libraries/chain/include/eosio/chain/controller.hpp
+++ b/libraries/chain/include/eosio/chain/controller.hpp
@@ -142,7 +142,7 @@ namespace eosio { namespace chain {
          /**
           * @return transactions applied in aborted block
           */
-         vector<transaction_metadata_ptr> abort_block();
+         deque<transaction_metadata_ptr> abort_block();
 
        /**
         *
@@ -227,8 +227,6 @@ namespace eosio { namespace chain {
          const block_signing_authority& pending_block_signing_authority()const;
          std::optional<block_id_type>   pending_producer_block_id()const;
 
-         const vector<transaction_receipt>& get_pending_trx_receipts()const;
-
          const producer_authority_schedule&         active_producers()const;
          const producer_authority_schedule&         pending_producers()const;
          std::optional<producer_authority_schedule> proposed_producers()const;
diff --git a/libraries/chain/include/eosio/chain/merkle.hpp b/libraries/chain/include/eosio/chain/merkle.hpp
index 00eae073e0..b99d18c101 100644
--- a/libraries/chain/include/eosio/chain/merkle.hpp
+++ b/libraries/chain/include/eosio/chain/merkle.hpp
@@ -17,6 +17,6 @@ namespace eosio { namespace chain {
    /**
     *  Calculates the merkle root of a set of digests, if ids is odd it will duplicate the last id.
     */
-   digest_type merkle( vector<digest_type> ids );
+   digest_type merkle( deque<digest_type> ids );
 
 } } /// eosio::chain
diff --git a/libraries/chain/include/eosio/chain/transaction_context.hpp b/libraries/chain/include/eosio/chain/transaction_context.hpp
index 5c850c1436..778234fa2e 100644
--- a/libraries/chain/include/eosio/chain/transaction_context.hpp
+++ b/libraries/chain/include/eosio/chain/transaction_context.hpp
@@ -129,7 +129,7 @@ namespace eosio { namespace chain {
          fc::time_point                published;
 
 
-         vector<digest_type>           executed_action_receipt_digests;
+         deque<digest_type>           executed_action_receipt_digests;
          flat_set<account_name>        bill_to_accounts;
          flat_set<account_name>        validate_ram_usage;
 
diff --git a/libraries/chain/include/eosio/chain/types.hpp b/libraries/chain/include/eosio/chain/types.hpp
index 6355cccae4..f875179049 100644
--- a/libraries/chain/include/eosio/chain/types.hpp
+++ b/libraries/chain/include/eosio/chain/types.hpp
@@ -17,6 +17,9 @@
 #include <fc/fixed_string.hpp>
 #include <fc/crypto/private_key.hpp>
 
+#include <boost/version.hpp>
+#include <boost/container/deque.hpp>
+
 #include <memory>
 #include <vector>
 #include <deque>
@@ -45,7 +48,6 @@ namespace eosio { namespace chain {
    using                               std::vector;
    using                               std::unordered_map;
    using                               std::string;
-   using                               std::deque;
    using                               std::shared_ptr;
    using                               std::weak_ptr;
    using                               std::unique_ptr;
@@ -76,7 +78,15 @@ namespace eosio { namespace chain {
    using public_key_type  = fc::crypto::public_key;
    using private_key_type = fc::crypto::private_key;
    using signature_type   = fc::crypto::signature;
-
+#if BOOST_VERSION >= 107100
+      // configurable boost deque performs much better than std::deque in our use cases
+      using block_1024_option_t = boost::container::deque_options< boost::container::block_size<1024u> >::type;
+      template<typename T>
+      using deque = boost::container::deque< T, void, block_1024_option_t >;
+#else
+      template<typename T>
+    using deque = std::deque<T>;
+#endif
    struct void_t{};
 
    using chainbase::allocator;
diff --git a/libraries/chain/include/eosio/chain/unapplied_transaction_queue.hpp b/libraries/chain/include/eosio/chain/unapplied_transaction_queue.hpp
index 3aab726739..4d83ab1b2a 100644
--- a/libraries/chain/include/eosio/chain/unapplied_transaction_queue.hpp
+++ b/libraries/chain/include/eosio/chain/unapplied_transaction_queue.hpp
@@ -153,7 +153,7 @@ class unapplied_transaction_queue {
       }
    }
 
-   void add_aborted( std::vector<transaction_metadata_ptr> aborted_trxs ) {
+   void add_aborted( deque<transaction_metadata_ptr> aborted_trxs ) {
       for( auto& trx : aborted_trxs ) {
          fc::time_point expiry = trx->packed_trx()->expiration();
          auto insert_itr = queue.insert( { std::move( trx ), expiry, trx_enum_type::aborted } );
diff --git a/libraries/chain/merkle.cpp b/libraries/chain/merkle.cpp
index 9c6ea42098..e4211f7bfd 100644
--- a/libraries/chain/merkle.cpp
+++ b/libraries/chain/merkle.cpp
@@ -32,7 +32,7 @@ bool is_canonical_right(const digest_type& val) {
 }
 
 
-digest_type merkle(vector<digest_type> ids) {
+digest_type merkle(deque<digest_type> ids) {
    if( 0 == ids.size() ) { return digest_type(); }
 
    while( ids.size() > 1 ) {
diff --git a/plugins/chain_plugin/test/test_trx_finality_status_processing.cpp b/plugins/chain_plugin/test/test_trx_finality_status_processing.cpp
index 308ee7bdaf..938c07d304 100644
--- a/plugins/chain_plugin/test/test_trx_finality_status_processing.cpp
+++ b/plugins/chain_plugin/test/test_trx_finality_status_processing.cpp
@@ -140,7 +140,7 @@ auto make_block_state( uint32_t block_num ) {
    auto bsp = std::make_shared<chain::block_state>(
          std::move( pbhs ),
          std::move( block ),
-         std::vector<chain::transaction_metadata_ptr>(),
+         deque<chain::transaction_metadata_ptr>(),
          chain::protocol_feature_set(),
          []( chain::block_timestamp_type timestamp,
              const fc::flat_set<chain::digest_type>& cur_features,
diff --git a/plugins/chain_plugin/test/test_trx_retry_db.cpp b/plugins/chain_plugin/test/test_trx_retry_db.cpp
index 7512589f77..a5155e525a 100644
--- a/plugins/chain_plugin/test/test_trx_retry_db.cpp
+++ b/plugins/chain_plugin/test/test_trx_retry_db.cpp
@@ -180,7 +180,7 @@ auto make_block_state( uint32_t block_num, std::vector<chain::packed_transaction
    auto bsp = std::make_shared<chain::block_state>(
          std::move( pbhs ),
          std::move( block ),
-         std::vector<chain::transaction_metadata_ptr>(),
+         deque<chain::transaction_metadata_ptr>(),
          chain::protocol_feature_set(),
          []( chain::block_timestamp_type timestamp,
              const fc::flat_set<chain::digest_type>& cur_features,
diff --git a/plugins/producer_plugin/producer_plugin.cpp b/plugins/producer_plugin/producer_plugin.cpp
index 8e4a7919cb..c2997b1cbb 100644
--- a/plugins/producer_plugin/producer_plugin.cpp
+++ b/plugins/producer_plugin/producer_plugin.cpp
@@ -38,7 +38,6 @@ using boost::multi_index_container;
 
 using std::string;
 using std::vector;
-using std::deque;
 using boost::signals2::scoped_connection;
 
 #undef FC_LOG_AND_DROP
diff --git a/plugins/trace_api_plugin/test/include/eosio/trace_api/test_common.hpp b/plugins/trace_api_plugin/test/include/eosio/trace_api/test_common.hpp
index 70774d728f..39cff9c3f7 100644
--- a/plugins/trace_api_plugin/test/include/eosio/trace_api/test_common.hpp
+++ b/plugins/trace_api_plugin/test/include/eosio/trace_api/test_common.hpp
@@ -9,6 +9,7 @@
 #include <eosio/chain/block.hpp>
 #include <eosio/chain/block_state.hpp>
 #include <eosio/chain/name.hpp>
+#include <eosio/chain/types.hpp>
 
 #include <eosio/trace_api/data_log.hpp>
 #include <eosio/trace_api/metadata_log.hpp>
@@ -94,7 +95,7 @@ namespace eosio::trace_api {
          auto bsp = std::make_shared<chain::block_state>(
             std::move( pbhs ),
             std::move( block ),
-            std::vector<chain::transaction_metadata_ptr>(),
+            eosio::chain::deque<chain::transaction_metadata_ptr>(),
             chain::protocol_feature_set(),
             []( chain::block_timestamp_type timestamp,
                 const fc::flat_set<chain::digest_type>& cur_features,
diff --git a/unittests/block_tests.cpp b/unittests/block_tests.cpp
index d837a13dd2..e4f8f15edc 100644
--- a/unittests/block_tests.cpp
+++ b/unittests/block_tests.cpp
@@ -31,7 +31,7 @@ BOOST_AUTO_TEST_CASE(block_with_invalid_tx_test)
    copy_b->transactions.back().trx = std::move(invalid_packed_tx);
 
    // Re-calculate the transaction merkle
-   vector<digest_type> trx_digests;
+   deque<digest_type> trx_digests;
    const auto& trxs = copy_b->transactions;
    for( const auto& a : trxs )
       trx_digests.emplace_back( a.digest() );
@@ -109,9 +109,8 @@ std::pair<signed_block_ptr, signed_block_ptr> corrupt_trx_in_block(validating_te
    copy_b->transactions.back().trx = std::move(invalid_packed_tx);
 
    // Re-calculate the transaction merkle
-   vector<digest_type> trx_digests;
+   deque<digest_type> trx_digests;
    const auto& trxs = copy_b->transactions;
-   trx_digests.reserve( trxs.size() );
    for( const auto& a : trxs )
       trx_digests.emplace_back( a.digest() );
    copy_b->transaction_mroot = merkle( move(trx_digests) );
@@ -262,7 +261,7 @@ BOOST_FIXTURE_TEST_CASE( abort_block_transactions, validating_tester) { try {
 
       control->get_account( a ); // throws if it does not exist
 
-      vector<transaction_metadata_ptr> unapplied_trxs = control->abort_block();
+      deque<transaction_metadata_ptr> unapplied_trxs = control->abort_block();
 
       // verify transaction returned from abort_block()
       BOOST_REQUIRE_EQUAL( 1,  unapplied_trxs.size() );
@@ -313,7 +312,7 @@ BOOST_FIXTURE_TEST_CASE( abort_block_transactions_tester, validating_tester) { t
 
       control->get_account( a ); // throws if it does not exist
 
-      vector<transaction_metadata_ptr> unapplied_trxs = control->abort_block(); // should be empty now
+      deque<transaction_metadata_ptr> unapplied_trxs = control->abort_block(); // should be empty now
 
       BOOST_REQUIRE_EQUAL( 0,  unapplied_trxs.size() );
 
diff --git a/unittests/unapplied_transaction_queue_tests.cpp b/unittests/unapplied_transaction_queue_tests.cpp
index 0de86e5e81..3b95218eff 100644
--- a/unittests/unapplied_transaction_queue_tests.cpp
+++ b/unittests/unapplied_transaction_queue_tests.cpp
@@ -32,7 +32,7 @@ auto next( unapplied_transaction_queue& q ) {
    return trx;
 }
 
-auto create_test_block_state( std::vector<transaction_metadata_ptr> trx_metas ) {
+auto create_test_block_state( deque<transaction_metadata_ptr> trx_metas ) {
    signed_block_ptr block = std::make_shared<signed_block>();
    for( auto& trx_meta : trx_metas ) {
       block->transactions.emplace_back( *trx_meta->packed_trx() );