Migrate everything to the 2018 edition (#1758)

substrate/core/sr-api-macros/tests/decl_and_impl.rs

@@ -1,13 +1,23 @@
-#[macro_use]
-extern crate substrate_client as client;
-extern crate sr_primitives as runtime_primitives;
-extern crate substrate_primitives as primitives;
-extern crate substrate_test_client as test_client;
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// Substrate is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Substrate is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
 
 use runtime_primitives::traits::{GetNodeBlockType, Block as BlockT, AuthorityIdFor};
 use runtime_primitives::generic::BlockId;
 use client::runtime_api::{self, RuntimeApiInfo};
-use client::error::Result;
+use client::{error::Result, decl_runtime_apis, impl_runtime_apis};
 use test_client::runtime::Block;
 
 /// The declaration of the `Runtime` type and the implementation of the `GetNodeBlockType`

substrate/core/sr-api-macros/tests/runtime_calls.rs

@@ -14,11 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
 
-extern crate substrate_client;
-extern crate substrate_test_client as test_client;
-extern crate sr_primitives as runtime_primitives;
-extern crate substrate_state_machine as state_machine;
-
 use test_client::runtime::{TestAPI, DecodeFails};
 use runtime_primitives::{generic::BlockId, traits::ProvideRuntimeApi};
 use state_machine::ExecutionStrategy;