Add rust workflow

.github/workflows/rust.yml

@@ -0,0 +1,79 @@
+name: Rust
+on:
+  pull_request:
+    paths:
+      - .github/workflows/rust.yml
+      - .gitmodules
+      - Cargo.lock
+      - Cargo.toml
+      - enclaves/**
+      - utils/**
+  push:
+    branches: master
+    paths:
+      - .github/workflows/rust.yml
+      - .gitmodules
+      - Cargo.lock
+      - Cargo.toml
+      - enclaves/**
+      - utils/**
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_PROFILE_DEV_DEBUG: 1
+  CARGO_PROFILE_RELEASE_DEBUG: 1
+  RUST_BACKTRACE: short
+  CARGO_NET_RETRY: 10
+  RUSTUP_MAX_RETRIES: 10
+  CARGO_TERM_COLOR: always
+
+jobs:
+  nightly-fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          components: rustfmt
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          components: clippy
+          override: true
+      - uses: Swatinem/rust-cache@v1
+      - uses: actions-rs/clippy-check@v1
+        with:
+          args: --all-features --all-targets
+
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+      - uses: Swatinem/rust-cache@v1
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --all-features --no-fail-fast --no-run
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --all-features --no-fail-fast --workspace -- --nocapture
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --no-default-features --no-fail-fast --no-run