use #[track_caller] and Location

.github/workflows/gh-pages.yml

@@ -35,6 +35,12 @@ jobs:
       - name: Build mdbook
         run: cargo install mdbook
 
+      - name: Build cargo-readme
+        run: cargo install cargo-readme
+
+      - name: Build README.md
+        run: cargo readme > README.md
+
       - name: Build
         run: mdbook build
 

.github/workflows/rust.yml

@@ -1,15 +1,86 @@
 name: Rust
 
-on: [push]
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the master branch
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  release:
+    types:
+      - created
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        version:
+          - 1.46.0
+          - stable
+          - beta
+          - nightly
     steps:
-    - uses: actions/checkout@v2
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v1
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.version }}
+          default: true
+          profile: minimal
+      - name: Build
+        run: cargo build --verbose
+      - name: Run tests
+        run: cargo test --verbose
+      - name: Build --all-features
+        run: cargo build --verbose --all-features
+      - name: Run tests --all-features
+        run: cargo test --verbose --all-features
+
+  fmt:
+    name: cargo fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          components: rustfmt
+          toolchain: stable
+          profile: minimal
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+  clippy:
+    name: cargo clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          components: clippy
+          toolchain: stable
+          profile: minimal
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
+
+  readme:
+    name: cargo readme
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+      - run: cargo install cargo-readme
+      - run: cargo readme > README.md && git diff --exit-code