Migrate to 2021 edition

.builds/freebsd.yml

@@ -24,8 +24,8 @@ tasks:
       cargo test
   - oldstable: |
       cd alacritty
-      rustup toolchain install --profile minimal 1.53.0
-      rustup default 1.53.0
+      rustup toolchain install --profile minimal 1.56.0
+      rustup default 1.56.0
       cargo test
   - clippy: |
       cd alacritty

.builds/linux.yml

@@ -27,8 +27,8 @@ tasks:
       cargo +nightly fmt -- --check
   - oldstable: |
       cd alacritty
-      rustup toolchain install --profile minimal 1.53.0
-      rustup default 1.53.0
+      rustup toolchain install --profile minimal 1.56.0
+      rustup default 1.56.0
       cargo test
   - clippy: |
       cd alacritty

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
         run: cargo test
       - name: Oldstable
         run: |
-          rustup default 1.53.0
+          rustup default 1.56.0
           cargo test
       - name: Clippy
         run: |

CHANGELOG.md

@@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## 0.11.0-dev
 
+### Packaging
+
+- Minimum Rust version has been bumped to 1.56.0
+
 ## 0.10.0
 
 ### Packaging

CONTRIBUTING.md

@@ -42,7 +42,7 @@ and
 [easy](https://github.com/alacritty/alacritty/issues?q=is%3Aopen+is%3Aissue+label%3A%22D+-+easy%22)
 issues.
 
-Please note that the minimum supported version of Alacritty is Rust 1.53.0. All patches are expected
+Please note that the minimum supported version of Alacritty is Rust 1.56.0. All patches are expected
 to work with the minimum supported version.
 
 Since `alacritty_terminal`'s version always tracks the next release, make sure that the version is

alacritty/Cargo.toml

@@ -6,7 +6,8 @@ license = "Apache-2.0"
 description = "A fast, cross-platform, OpenGL terminal emulator"
 readme = "README.md"
 homepage = "https://github.com/alacritty/alacritty"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.0"
 
 [dependencies.alacritty_terminal]
 path = "../alacritty_terminal"

alacritty_config_derive/Cargo.toml

@@ -5,7 +5,8 @@ authors = ["Christian Duerr <contact@christianduerr.com>"]
 license = "MIT/Apache-2.0"
 description = "Failure resistant deserialization derive"
 homepage = "https://github.com/alacritty/alacritty"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.0"
 
 [lib]
 proc-macro = true

alacritty_config_derive/src/de_struct.rs

@@ -185,7 +185,7 @@ struct Attr {
 }
 
 impl Parse for Attr {
-    fn parse(input: ParseStream) -> parse::Result<Self> {
+    fn parse(input: ParseStream<'_>) -> parse::Result<Self> {
         let ident = input.parse::<Ident>()?.to_string();
         let param = input.parse::<Token![=]>().and_then(|_| input.parse()).ok();
         Ok(Self { ident, param })

alacritty_config_derive/tests/config.rs

@@ -131,7 +131,7 @@ struct Logger {
 }
 
 impl Log for Logger {
-    fn log(&self, record: &Record) {
+    fn log(&self, record: &Record<'_>) {
         assert_eq!(record.target(), env!("CARGO_PKG_NAME"));
 
         match record.level() {
@@ -147,7 +147,7 @@ impl Log for Logger {
         }
     }
 
-    fn enabled(&self, _metadata: &Metadata) -> bool {
+    fn enabled(&self, _metadata: &Metadata<'_>) -> bool {
         true
     }
 

alacritty_terminal/Cargo.toml

@@ -6,7 +6,8 @@ license = "Apache-2.0"
 description = "Library for writing terminal emulators"
 readme = "../README.md"
 homepage = "https://github.com/alacritty/alacritty"
-edition = "2018"
+edition = "2021"
+rust-version = "1.56.0"
 
 [dependencies.alacritty_config_derive]
 path = "../alacritty_config_derive"