chore: set rust edition to 2021

Cargo.toml

@@ -10,6 +10,7 @@ description = "Bitcoin Electrum client library. Supports plaintext, TLS and Onio
 keywords = ["bitcoin", "electrum"]
 readme = "README.md"
 rust-version = "1.63.0"
+edition = "2021"
 
 # loosely based on https://github.com/evgeniy-scherbina/rust-electrumx-client
 

src/api.rs

@@ -6,8 +6,8 @@ use std::convert::TryInto;
 use bitcoin::consensus::encode::{deserialize, serialize};
 use bitcoin::{block, Script, Transaction, Txid};
 
-use batch::Batch;
-use types::*;
+use crate::batch::Batch;
+use crate::types::*;
 
 /// API calls exposed by an Electrum client
 pub trait ElectrumApi {

src/batch.rs

@@ -4,7 +4,7 @@
 
 use bitcoin::{Script, Txid};
 
-use types::{Call, Param, ToElectrumScriptHash};
+use crate::types::{Call, Param, ToElectrumScriptHash};
 
 /// Helper structure that caches all the requests before they are actually sent to the server.
 ///

src/client.rs

@@ -6,12 +6,12 @@ use log::{info, warn};
 
 use bitcoin::{Script, Txid};
 
-use api::ElectrumApi;
-use batch::Batch;
-use config::Config;
-use raw_client::*;
+use crate::api::ElectrumApi;
+use crate::batch::Batch;
+use crate::config::Config;
+use crate::raw_client::*;
+use crate::types::*;
 use std::convert::TryFrom;
-use types::*;
 
 /// Generalized Electrum client that supports multiple backends. This wraps
 /// [`RawClient`](client/struct.RawClient.html) and provides a more user-friendly

src/raw_client.rs

@@ -39,11 +39,11 @@ use rustls::{
 #[cfg(any(feature = "default", feature = "proxy"))]
 use crate::socks::{Socks5Stream, TargetAddr, ToTargetAddr};
 
-use stream::ClonableStream;
+use crate::stream::ClonableStream;
 
-use api::ElectrumApi;
-use batch::Batch;
-use types::*;
+use crate::api::ElectrumApi;
+use crate::batch::Batch;
+use crate::types::*;
 
 macro_rules! impl_batch_call {
     ( $self:expr, $data:expr, $call:ident ) => {{
@@ -298,7 +298,7 @@ impl RawClient<ElectrumSslStream> {
     not(feature = "use-openssl")
 ))]
 mod danger {
-    use raw_client::ServerName;
+    use crate::raw_client::ServerName;
     use rustls::client::danger::ServerCertVerified;
     use rustls::pki_types::CertificateDer;
     use rustls::pki_types::UnixTime;

src/utils.rs

@@ -1,10 +1,10 @@
 //! Utilities helping to handle Electrum-related data.
 
+use crate::types::GetMerkleRes;
 use bitcoin::hash_types::TxMerkleNode;
 use bitcoin::hashes::sha256d::Hash as Sha256d;
 use bitcoin::hashes::{Hash, HashEngine};
 use bitcoin::Txid;
-use types::GetMerkleRes;
 
 /// Verifies a Merkle inclusion proof as retrieved via [`transaction_get_merkle`] for a transaction with the
 /// given `txid` and `merkle_root` as included in the [`BlockHeader`].