Merge pull request #3 from zcash/ci

CI overhaul

Author: str4d

.github/workflows/ci.yml

@@ -2,36 +2,8 @@ name: CI
 on: [push, pull_request]
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: nightly
-          components: rustfmt, clippy
-          override: true
-      - uses: Swatinem/rust-cache@v1
-      - run: cargo clippy --all-features -- -D warnings
-      - run: cargo fmt -- --check
-
-  semver-checks:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          profile: minimal
-      - name: Run cargo-semver-checks
-        shell: bash
-        run: |
-          export CARGO_TERM_COLOR=always
-          cargo install cargo-semver-checks --locked
-          cargo semver-checks check-release
-
   test:
+    name: Test ${{ matrix.rust }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     services:
       postgres:
@@ -49,15 +21,38 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         rust:
+          - MSRV
           - stable
-          - 1.59
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust }}
-          profile: minimal
-          override: true
+      - uses: actions/checkout@v4
+
+      # If testing stable Rust, do so with the latest dependencies.
+      - uses: dtolnay/rust-toolchain@stable
+        id: toolchain
+        if: matrix.rust == 'stable'
+      - run: rustup override set ${{steps.toolchain.outputs.name}}
+        if: matrix.rust == 'stable'
+      - name: Remove lockfile to build with latest dependencies
+        run: rm Cargo.lock
+        if: matrix.rust == 'stable'
+
       - uses: Swatinem/rust-cache@v1
       - run: cargo build --tests
       - run: cargo test -- --nocapture --quiet
+
+  clippy-msrv:
+    name: Clippy (MSRV)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: Swatinem/rust-cache@v1
+      - run: cargo clippy --all-features -- -D warnings
+      - run: cargo fmt -- --check
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check formatting
+        run: cargo fmt --all -- --check

.gitignore

@@ -2,5 +2,4 @@
 /target/
 **/target/
 **/*.rs.bk
-Cargo.lock
 *.sublime*