Clean up CI config (#61)

Author: taiki-e

.clippy.toml

@@ -0,0 +1 @@
+msrv = "1.45"

.github/workflows/ci.yml

@@ -0,0 +1,60 @@
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+  push:
+    branches:
+      - master
+
+env:
+  RUSTFLAGS: -Dwarnings
+  RUST_BACKTRACE: 1
+  # This is the minimum supported Rust version of this crate.
+  # When updating this, the reminder to update the minimum supported
+  # Rust version in README.md and .clippy.toml.
+  minrust: 1.45.2
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo test --all-features
+
+  minrust:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update ${{ env.minrust }} && rustup default ${{ env.minrust }}
+      - run: cargo build --all-features
+
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo fmt --all -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Install Rust
+        run: rustup update stable
+      - run: cargo clippy --all-features
+
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        run: rustup update nightly && rustup default nightly
+      - run: cargo doc --no-deps --all-features
+        env:
+          RUSTDOCFLAGS: -Dwarnings

.github/workflows/main.yml

@@ -151,6 +151,7 @@ caller.
 [`Stream`]: https://docs.rs/futures-core/*/futures_core/stream/trait.Stream.html
 
 ## Supported Rust Versions
+
 `async-stream` is built against the latest stable release. The minimum supported version is 1.45 due to [function-like procedural macros in expression, pattern, and statement positions](https://blog.rust-lang.org/2020/07/16/Rust-1.45.0.html#stabilizing-function-like-procedural-macros-in-expressions-patterns-and-statements).
 
 ## License