Some fixes

cumulus/runtime/src/lib.rs

@@ -14,10 +14,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.
 
-///! The Cumulus runtime to make a runtime a parachain.
-
 #![cfg_attr(not(feature = "std"), no_std)]
 
+///! The Cumulus runtime to make a runtime a parachain.
+
 use rstd::vec::Vec;
 use codec::{Encode, Decode};
 use runtime_primitives::traits::Block as BlockT;

cumulus/test/runtime/src/lib.rs

@@ -20,4 +20,4 @@
 
 pub use substrate_test_runtime::*;
 
-runtime::register_validate_block!(Block, BlockExecutor);
+runtime::register_validate_block!(Block, system::BlockExecutor);