Replace travis CI with Github Actions

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Continuous integration
+
+env:
+  RUSTFLAGS: '--deny warnings'
+
+jobs:
+  ci-linux:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # All generated code should be running on stable now
+        rust: [stable]
+
+        # The default target we're compiling on and for
+        TARGET: [x86_64-unknown-linux-gnu, thumbv6m-none-eabi, thumbv7m-none-eabi]
+
+        include:
+          # Test MSRV
+          - rust: 1.36.0
+            TARGET: x86_64-unknown-linux-gnu
+
+          # Test nightly but don't fail
+          - rust: nightly
+            experimental: true
+            TARGET: x86_64-unknown-linux-gnu
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          target: ${{ matrix.TARGET }}
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target=${{ matrix.TARGET }}

.github/workflows/clippy.yml

@@ -0,0 +1,20 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Clippy check
+jobs:
+  clippy_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - 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/rustfmt.yml

@@ -0,0 +1,23 @@
+on:
+  push:
+    branches: [ staging, trying, master ]
+  pull_request:
+
+name: Code formatting check
+
+jobs:
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check

rust-toolchain

@@ -1 +1 @@
-nightly
+stable