ci: simplify, test MSRV.

.github/workflows/test.yml

@@ -13,38 +13,48 @@ env:
 jobs:
   test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - stable
-          - 1.60.0  # MSRV
-          - nightly
-        target:
-          - x86_64-unknown-linux-gnu
-          - thumbv7m-none-eabi
-        features:
-          - ''
-        include:
-          - rust: stable
-            target: x86_64-unknown-linux-gnu
-            features: std
-          - rust: stable
-            target: x86_64-unknown-linux-gnu
-            features: alloc
-          - rust: nightly
-            target: x86_64-unknown-linux-gnu
-            features: std,tokio-1,futures-03,defmt-03
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{ matrix.rust }}
-          target: ${{ matrix.target }}
+      - uses: dtolnay/rust-toolchain@beta
+      - run: cargo test --workspace
+
+  test-all-features:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@beta
+      - run: cargo test --workspace --all-features
 
-      - run: mv Cargo.stable.toml Cargo.toml
-        if: matrix.rust != 'nightly'
+  build-nostd:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@beta
+        with:
+          target: thumbv7m-none-eabi
+      - run: >
+          cargo build
+          --workspace
+          --target thumbv7m-none-eabi
+          --features async,defmt-03
 
-      - run: cargo check --target=${{ matrix.target }} --features=${{ matrix.features }}
+  msrv-1-60:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/[email protected]
+      - run: >
+          cargo test
+          -p embedded-hal:1.0.0-rc.2
+          -p embedded-hal-bus
+          -p embedded-hal-nb
+          -p embedded-io
+          -p embedded-io-adapters
+          -p embedded-can
 
-      - run: cargo test --target=${{ matrix.target }} --features=${{ matrix.features }}
-        if: contains(matrix.target, 'linux')
+  msrv-1-75:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@beta
+      - run: cargo test --workspace --all-features

embedded-hal-async/Cargo.toml

@@ -12,7 +12,7 @@ name = "embedded-hal-async"
 readme = "README.md"
 repository = "https://github.com/rust-embedded/embedded-hal"
 version = "1.0.0-rc.2"
-rust-version = "1.65.0"
+rust-version = "1.75"
 
 [features]
 defmt-03 = ["dep:defmt-03", "embedded-hal/defmt-03"]

embedded-hal-async/README.md

@@ -23,15 +23,10 @@ or a console to operate either on hardware serial ports or on virtual ones like
 
 ## Minimum Supported Rust Version (MSRV)
 
-This crate requires Rust nightly newer than `nightly-2022-11-22`, due to requiring support for
-`async fn` in traits (AFIT), which is not stable yet.
+This crate is guaranteed to compile on stable Rust 1.75 and up. It *might*
+compile with older versions but that may change in any new patch release.
 
-Keep in mind Rust nightlies can make backwards-incompatible changes to unstable features
-at any time. If this happens, we might do changes that increase the minimum required nightly
-version in any patch release.
-
-When AFIT becomes stable, MSRV will be bumped to the Rust version that stabilizes it, after which
-point the [standard MSRV bump policy](../docs/msrv.md) will apply.
+See [here](../docs/msrv.md) for details on how the MSRV may be upgraded.
 
 ## License
 

embedded-hal-bus/README.md

@@ -41,6 +41,8 @@ compile with older versions but that may change in any new patch release.
 
 See [here](../docs/msrv.md) for details on how the MSRV may be upgraded.
 
+Enabling the `async` Cargo features requires Rust 1.75 or higher.
+
 ## License
 
 Licensed under either of

embedded-hal/Cargo.toml

@@ -8,7 +8,7 @@ categories = ["asynchronous", "embedded", "hardware-support", "no-std"]
 description = " A Hardware Abstraction Layer (HAL) for embedded systems "
 documentation = "https://docs.rs/embedded-hal"
 edition = "2021"
-rust-version = "1.56"
+rust-version = "1.60"
 keywords = ["hal", "IO"]
 license = "MIT OR Apache-2.0"
 name = "embedded-hal"

embedded-io-adapters/README.md

@@ -34,10 +34,7 @@ compile with older versions but that may change in any new patch release.
 
 See [here](../docs/msrv.md) for details on how the MSRV may be upgraded.
 
-Enabling any of the `tokio-*` or `futures-*` Cargo features requires Rust nightly newer than
-`nightly-2022-11-22`, due to requiring support for `async fn` in traits (AFIT),
-which is not stable yet. Keep in mind Rust nightlies can make backwards-incompatible
-changes to unstable features at any time.
+Enabling any of the `tokio-*` or `futures-*` Cargo features requires Rust 1.75 or higher.
 
 ## License
 

embedded-io-async/Cargo.toml

@@ -2,6 +2,7 @@
 name = "embedded-io-async"
 version = "0.6.1"
 edition = "2021"
+rust-version = "1.75"
 description = "Async embedded IO traits"
 repository = "https://github.com/rust-embedded/embedded-hal"
 readme = "README.md"

embedded-io-async/README.md

@@ -18,11 +18,10 @@ This project is developed and maintained by the [HAL team](https://github.com/ru
 
 ## Minimum Supported Rust Version (MSRV)
 
-This crate requires Rust nightly newer than `nightly-2022-11-22`, due to requiring support for
-`async fn` in traits (AFIT), which is not stable yet. 
+This crate is guaranteed to compile on stable Rust 1.75 and up. It *might*
+compile with older versions but that may change in any new patch release.
 
-Keep in mind Rust nightlies can make backwards-incompatible changes to unstable features
-at any time.
+See [here](../docs/msrv.md) for details on how the MSRV may be upgraded.
 
 ## License