Upgrade from futures-preview to futures 0.3.1, and remove futures 0.1 where currently possible (#4083)

* Migrate node and node-template

* Migrate srml

* Simple changes

* Add async-std for interval

* Fix test-runtime warning

* Small changes

* move futures01 in core/rpc to dev-deps

* Change wasm CI builds

* Switch to async-std 1.0.1

* Remove async-std dep of network

* Add modified lockfile

* Fix node cli browser build

* Remove authority-discovery async-std dep

* Add Send + Sync to interval dyn stream

substrate/client/rpc/src/author/mod.rs

@@ -20,7 +20,7 @@
 mod tests;
 
 use std::{sync::Arc, convert::TryInto};
-use futures03::future::{FutureExt, TryFutureExt};
+use futures::future::{FutureExt, TryFutureExt};
 use log::warn;
 
 use client::Client;
@@ -30,7 +30,7 @@ use rpc::futures::{
 	Sink, Future,
 	future::result,
 };
-use futures03::{StreamExt as _, compat::Compat, future::ready};
+use futures::{StreamExt as _, compat::Compat, future::ready};
 use api::Subscriptions;
 use jsonrpc_pubsub::{typed::Subscriber, SubscriptionId};
 use codec::{Encode, Decode};

substrate/client/rpc/src/chain/chain_light.rs

@@ -17,7 +17,7 @@
 //! Blockchain API backend for light nodes.
 
 use std::sync::Arc;
-use futures03::{future::ready, FutureExt, TryFutureExt};
+use futures::{future::ready, FutureExt, TryFutureExt};
 use rpc::futures::future::{result, Future, Either};
 
 use api::Subscriptions;

substrate/client/rpc/src/chain/mod.rs

@@ -23,7 +23,7 @@ mod chain_light;
 mod tests;
 
 use std::sync::Arc;
-use futures03::{future, StreamExt as _, TryStreamExt as _};
+use futures::{future, StreamExt, TryStreamExt};
 use log::warn;
 use rpc::{
 	Result as RpcResult,

substrate/client/rpc/src/state/state_full.rs

@@ -19,7 +19,7 @@
 use std::collections::{BTreeMap, HashMap};
 use std::sync::Arc;
 use std::ops::Range;
-use futures03::{future, StreamExt as _, TryStreamExt as _};
+use futures::{future, StreamExt as _, TryStreamExt as _};
 use log::warn;
 use jsonrpc_pubsub::{typed::Subscriber, SubscriptionId};
 use rpc::{

substrate/client/rpc/src/state/state_light.rs

@@ -21,7 +21,7 @@ use std::{
 	collections::{HashSet, HashMap, hash_map::Entry},
 };
 use codec::Decode;
-use futures03::{
+use futures::{
 	future::{ready, Either},
 	channel::oneshot::{channel, Sender},
 	FutureExt, TryFutureExt,
@@ -753,7 +753,7 @@ mod tests {
 
 	#[test]
 	fn maybe_share_remote_request_shares_request() {
-		type UnreachableFuture = futures03::future::Ready<Result<u32, Error>>;
+		type UnreachableFuture = futures::future::Ready<Result<u32, Error>>;
 
 		let shared_requests = SimpleSubscriptions::default();
 

substrate/client/rpc/src/state/tests.rs

@@ -20,7 +20,7 @@ use self::error::Error;
 
 use std::sync::Arc;
 use assert_matches::assert_matches;
-use futures::stream::Stream;
+use futures01::stream::Stream;
 use primitives::storage::well_known_keys;
 use sr_io::hashing::blake2_256;
 use test_client::{

substrate/client/rpc/src/system/mod.rs

@@ -19,7 +19,7 @@
 #[cfg(test)]
 mod tests;
 
-use futures03::{channel::{mpsc, oneshot}, compat::Compat};
+use futures::{channel::{mpsc, oneshot}, compat::Compat};
 use api::Receiver;
 use sr_primitives::traits::{self, Header as HeaderT};
 use self::error::Result;

substrate/client/rpc/src/system/tests.rs

@@ -20,7 +20,7 @@ use network::{self, PeerId};
 use network::config::Roles;
 use test_client::runtime::Block;
 use assert_matches::assert_matches;
-use futures03::{prelude::*, channel::mpsc};
+use futures::{prelude::*, channel::mpsc};
 use std::thread;
 
 struct Status {
@@ -46,7 +46,7 @@ fn api<T: Into<Option<Status>>>(sync: T) -> System<Block> {
 	let should_have_peers = !status.is_dev;
 	let (tx, rx) = mpsc::unbounded();
 	thread::spawn(move || {
-		futures03::executor::block_on(rx.for_each(move |request| {
+		futures::executor::block_on(rx.for_each(move |request| {
 			match request {
 				Request::Health(sender) => {
 					let _ = sender.send(Health {
@@ -231,4 +231,4 @@ fn system_node_roles() {
 		wait_receiver(api(None).system_node_roles()),
 		vec![NodeRole::Authority]
 	);
-}
+}