Bump MSRV to 1.56.0

Closes str4d/age-plugin-yubikey#51.

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.51.0
+          toolchain: 1.56.0
           override: true
       - name: Install build dependencies
         run: sudo apt install ${{ matrix.build_deps }}
@@ -46,14 +46,14 @@ jobs:
           args: --verbose
 
   clippy:
-    name: Clippy (1.51.0)
+    name: Clippy (1.56.0)
     timeout-minutes: 30
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.51.0
+          toolchain: 1.56.0
           components: clippy
           override: true
       - name: Install build dependencies
@@ -61,7 +61,7 @@ jobs:
       - name: Run clippy
         uses: actions-rs/clippy-check@v1
         with:
-          name: Clippy (1.51.0)
+          name: Clippy (1.56.0)
           token: ${{ secrets.GITHUB_TOKEN }}
           args: --all-features --all-targets -- -D warnings
 
@@ -117,7 +117,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.51.0
+          toolchain: 1.56.0
           override: true
       - name: Install build dependencies
         run: sudo apt install libpcsclite-dev
@@ -142,7 +142,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.51.0
+          toolchain: 1.56.0
           components: rustfmt
           override: true
       - name: Check formatting

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to Rust's notion of
 to 1.0.0 are beta releases.
 
 ## [Unreleased]
+### Changed
+- MSRV is now 1.56.0.
 
 ## [0.2.0] - 2021-11-22
 ### Fixed

README.md

@@ -12,7 +12,7 @@ or one that you do not care about.
 On Windows, Linux, and macOS, you can use the
 [pre-built binaries](https://github.com/str4d/age-plugin-yubikey/releases).
 
-If your system has Rust 1.51+ installed (either via `rustup` or a system
+If your system has Rust 1.56+ installed (either via `rustup` or a system
 package), you can build directly from source:
 
 ```

rust-toolchain

@@ -1 +1 @@
-1.51.0
+1.56.0