Add Github Actions for CI

.github/workflows/clippy.yml

@@ -0,0 +1,25 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request_target:
+
+name: Clippy check
+jobs:
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        if: github.event_name == 'pull_request_target'
+        with:
+          ref: refs/pull/${{ github.event.number }}/head
+      - uses: actions/checkout@v2
+        if: github.event_name != 'pull_request_target'
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: clippy
+      - uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/fuzz.yml

@@ -0,0 +1,21 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Fuzz
+
+jobs:
+  fuzz:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          override: true
+      - name: Install cargo-fuzz
+        run: cargo install cargo-fuzz
+      - name: Fuzz
+        run: cargo fuzz run packet_parser -- -max_len=1536 -max_total_time=30

.github/workflows/test.yml

@@ -0,0 +1,79 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Test
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+    continue-on-error: ${{ matrix.rust == 'nightly' }}
+    strategy:
+      matrix:
+        # Test on stable, MSRV 1.36, and nightly.
+        # Failure is permitted on nightly.
+        rust:
+          - stable
+          - 1.36.0
+          - nightly
+
+        features:
+          # Test default features.
+          - default
+
+          # Test features chosen to be as orthogonal as possible.
+          - std ethernet phy-raw_socket proto-ipv6 socket-udp
+          - std ethernet phy-tap_interface proto-ipv6 socket-udp
+          - std ethernet proto-ipv4 proto-igmp socket-raw
+          - std ethernet proto-ipv4 socket-udp socket-tcp
+          - std ethernet proto-ipv4 proto-dhcpv4 socket-udp
+          - std ethernet proto-ipv6 socket-udp
+          - std ethernet proto-ipv6 socket-tcp
+          - std ethernet proto-ipv4 socket-icmp socket-tcp
+          - std ethernet proto-ipv6 socket-icmp socket-tcp
+
+          # Test features chosen to be as aggressive as possible.
+          - std ethernet proto-ipv4 proto-ipv6 socket-raw socket-udp socket-tcp socket-icmp
+
+        include:
+          # Test alloc feature which requires nightly.
+          - rust: nightly
+            features: alloc ethernet proto-ipv4 proto-ipv6 socket-raw socket-udp socket-tcp socket-icmp
+          - rust: nightly
+            features: alloc proto-ipv4 proto-ipv6 socket-raw socket-udp socket-tcp socket-icmp
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - name: Run Tests
+        run: cargo test --no-default-features --features "${{ matrix.features }}"
+
+  check:
+    runs-on: ubuntu-20.04
+    continue-on-error: ${{ matrix.rust == 'nightly' }}
+    strategy:
+      matrix:
+        # Test on stable, MSRV 1.36, and nightly.
+        # Failure is permitted on nightly.
+        rust:
+          - stable
+          - 1.36.0
+          - nightly
+
+        features:
+          # These feature sets cannot run tests, so we only check they build.
+          - ethernet proto-ipv6 proto-ipv6 proto-igmp proto-dhcpv4 socket-raw socket-udp socket-tcp socket-icmp
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - name: Check
+        run: cargo check --no-default-features --features "${{ matrix.features }}"

README.md

@@ -6,7 +6,7 @@ include complicated compile-time computations, such as macro or type tricks, eve
 at cost of performance degradation.
 
 _smoltcp_ does not need heap allocation *at all*, is [extensively documented][docs],
-and compiles on stable Rust 1.28 and later.
+and compiles on stable Rust 1.36 and later.
 
 _smoltcp_ achieves [~Gbps of throughput](#examplesbenchmarkrs) when tested against
 the Linux TCP stack in loopback mode.