Merge #30

30: Implement OnceLock r=bertptrs a=bertptrs

1.70 brought `OnceLock`. This needs a new wrapper and should replace all usage of `lazy_static!`, as well as the current internal implementation of OnceLock.

Co-authored-by: Bert Peters <bert@bertptrs.nl>

.github/workflows/ci.yml

@@ -21,28 +21,48 @@ jobs:
           - nightly
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
 
-      - uses: dtolnay/rust-toolchain@v1
+      - uses: actions-rs/toolchain@v1
         with:
+          profile: minimal
           toolchain: ${{ matrix.rust }}
+          override: true
           components: rustfmt, clippy
 
-      - run: cargo build --all-features --all-targets
+      - uses: actions-rs/cargo@v1
-      - run: cargo test --all-features
+        with:
-      - run: cargo fmt --all -- --check
+          command: build
-      - run: cargo clippy --all-features --all-targets -- -D warnings
+          # --all-targets ensures that we also build the benchmarks and tests already.
+          args: --all-features --all-targets
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --all-features
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: --all-features --all-targets -- -D warnings
 
   docs:
     name: Documentation build
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
 
-      - uses: dtolnay/rust-toolchain@v1
+      - uses: actions-rs/toolchain@v1
         with:
+          profile: minimal
           toolchain: nightly
+          override: true
 
       - name: Build documentation
         env:

Cargo.toml

@@ -23,7 +23,7 @@ lock_api = { version = "0.4", optional = true }
 parking_lot = { version = "0.12", optional = true }
 
 [dev-dependencies]
-criterion = "0.5"
+criterion = "0.3"
 rand = "0.8"
 
 [[bench]]