chore: update all rust editions to 2021 (#1979)

ethers-contract/ethers-contract-abigen/Cargo.toml

@@ -1,11 +1,12 @@
 [package]
 name = "ethers-contract-abigen"
 version = "1.0.2"
+edition = "2021"
+rust-version = "1.64"
 authors = [
     "Nicholas Rodrigues Lordello <nlordell@gmail.com>",
     "Georgios Konstantopoulos <me@gakonst.com>",
 ]
-edition = "2018"
 license = "MIT OR Apache-2.0"
 description = "Code generation for type-safe bindings to Ethereum smart contracts"
 homepage = "https://docs.rs/ethers"

ethers-contract/ethers-contract-derive/Cargo.toml

@@ -1,11 +1,12 @@
 [package]
 name = "ethers-contract-derive"
 version = "1.0.2"
+edition = "2021"
+rust-version = "1.64"
 authors = [
     "Nicholas Rodrigues Lordello <nlordell@gmail.com>",
     "Georgios Konstantopoulos <me@gakonst.com>",
 ]
-edition = "2018"
 license = "MIT OR Apache-2.0"
 description = "Proc macro for type-safe bindings generation to Ethereum and Celo smart contracts"
 homepage = "https://docs.rs/ethers"

ethers-core/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "ethers-core"
-license = "MIT OR Apache-2.0"
 version = "1.0.2"
+edition = "2021"
 rust-version = "1.64"
 authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
-edition = "2018"
+license = "MIT OR Apache-2.0"
 description = "Core structures for the ethers-rs crate"
 homepage = "https://docs.rs/ethers"
 repository = "https://github.com/gakonst/ethers-rs"

ethers-core/ethers-derive-eip712/Cargo.toml

@@ -1,7 +1,8 @@
 [package]
 name = "ethers-derive-eip712"
 version = "1.0.2"
-edition = "2018"
+edition = "2021"
+rust-version = "1.64"
 description = "Custom derive macro for EIP-712 typed data"
 license = "MIT OR Apache-2.0"
 
@@ -11,7 +12,10 @@ proc-macro = true
 [dependencies]
 quote = "1.0.9"
 syn = "1.0.77"
-ethers-core = { version = "^1.0.0", path = "../", default-features = false, features = ["eip712", "macros"] }
+ethers-core = { version = "^1.0.0", path = "../", default-features = false, features = [
+    "eip712",
+    "macros",
+] }
 hex = "0.4.3"
 serde_json = "1.0.68"
 

ethers-etherscan/Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "ethers-etherscan"
 version = "1.0.2"
+edition = "2021"
 rust-version = "1.64"
 authors = [
     "Matthias Seitz <matthias.seitz@outlook.de>",
     "Georgios Konstantopoulos <me@gakonst.com>",
 ]
 license = "MIT OR Apache-2.0"
-edition = "2018"
 readme = "../README.md"
 documentation = "https://docs.rs/ethers"
 repository = "https://github.com/gakonst/ethers-rs"

ethers-middleware/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethers-middleware"
 version = "1.0.2"
-edition = "2018"
+edition = "2021"
 rust-version = "1.64"
 authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
 license = "MIT OR Apache-2.0"

ethers-providers/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethers-providers"
 version = "1.0.2"
-edition = "2018"
+edition = "2021"
 rust-version = "1.64"
 authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
 license = "MIT OR Apache-2.0"

ethers-signers/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethers-signers"
 version = "1.0.2"
-edition = "2018"
+edition = "2021"
 rust-version = "1.64"
 authors = ["Georgios Konstantopoulos <me@gakonst.com>"]
 license = "MIT OR Apache-2.0"

ethers-solc/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethers-solc"
 version = "1.0.2"
-edition = "2018"
+edition = "2021"
 rust-version = "1.64"
 authors = [
     "Matthias Seitz <matthias.seitz@outlook.de>",

examples/ethers-wasm/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "ethers-wasm"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 rust-version = "1.64"
 authors = ["Matthias Seitz <matthias.seitz@outlook.de>"]
 license = "MIT OR Apache-2.0"