Check all feature combinations works properly on CI

.github/workflows/ci.yml

@@ -35,9 +35,27 @@ jobs:
           - 1.36.0
           - nightly
         os:
-         - ubuntu
-         - windows
-    runs-on: ${{ matrix.os }}-latest
+         - ubuntu-latest
+         - windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@master
+      - name: Install Rust
+        run: rustup update ${{ matrix.rust }} && rustup default ${{ matrix.rust }}
+      - name: Test
+        run: ./ci/${{ matrix.crates }}.sh
+
+  # Check all feature combinations works properly.
+  check-features:
+    name: check-features
+    env:
+      RUST_VERSION: ${{ matrix.rust }}
+    strategy:
+      matrix:
+        rust:
+          - 1.36.0
+          - nightly
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
       - name: Install Rust
@@ -47,8 +65,8 @@ jobs:
         run: |
           rustup target add thumbv7m-none-eabi
           rustup target add thumbv6m-none-eabi
-      - name: Test
-        run: ./ci/${{ matrix.crates }}.sh
+      - name: Check features
+        run: ./ci/check-features.sh
 
   # Check for duplicate dependencies.
   dependencies:

ci/check-features.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+cd "$(dirname "$0")"/..
+set -ex
+
+if [[ ! -x "$(command -v cargo-hack)" ]]; then
+    cargo install --debug cargo-hack || exit 1
+fi
+
+if [[ "$RUST_VERSION" != "nightly"* ]]; then
+    # On MSRV, features other than nightly should work.
+    # * `--feature-powerset` - run for the feature powerset which includes --no-default-features and default features of package
+    # * `--no-dev-deps` - build without dev-dependencies to avoid https://github.com/rust-lang/cargo/issues/4866
+    # * `--exclude benchmarks` - benchmarks doesn't published.
+    # * `--skip nightly` - skip `nightly` feature as requires nightly compilers.
+    cargo hack check --all --feature-powerset --no-dev-deps --exclude benchmarks --skip nightly
+else
+    # On nightly, all feature　combinations should work.
+    cargo hack check --all --feature-powerset --no-dev-deps --exclude benchmarks
+    # TODO(taiki-e): if https://github.com/taiki-e/cargo-hack/issues/42 merged, remove this.
+    cargo hack check --all --all-features --no-dev-deps --exclude benchmarks
+
+    # Check for no_std environment.
+    cargo hack check --all --feature-powerset --no-dev-deps --exclude benchmarks --target thumbv7m-none-eabi --skip std,default
+    # * `--features nightly` is required for enable `cfg_target_has_atomic`.
+    # * `--ignore-unknown-features` - some crates doesn't have 'nightly' feature
+    cargo hack check --all --feature-powerset --no-dev-deps --exclude benchmarks --target thumbv6m-none-eabi --skip std,default --features nightly --ignore-unknown-features
+fi

ci/crossbeam-channel.sh

@@ -8,7 +8,7 @@ export RUSTFLAGS="-D warnings"
 cargo check --bins --examples --tests
 cargo test -- --test-threads=1
 
-if [[ "$RUST_VERSION" == "nightly" ]]; then
+if [[ "$RUST_VERSION" == "nightly"* ]]; then
     cd benchmarks
     cargo check --bins
 fi

ci/crossbeam-epoch.sh

@@ -5,12 +5,10 @@ set -ex
 
 export RUSTFLAGS="-D warnings"
 
-cargo check --no-default-features
 cargo check --bins --examples --tests
 cargo test
 
-if [[ "$RUST_VERSION" == "nightly" ]]; then
-    cargo check --no-default-features --features nightly
+if [[ "$RUST_VERSION" == "nightly"* ]]; then
     cargo test --features nightly
 
     if [[ "$OSTYPE" == "linux"* ]]; then
@@ -22,11 +20,4 @@ if [[ "$RUST_VERSION" == "nightly" ]]; then
             --features sanitize,nightly \
             --example sanitize
     fi
-
-    # Check for no_std environment.
-    cargo check --target thumbv7m-none-eabi --no-default-features
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc,nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features alloc,nightly
 fi

ci/crossbeam-queue.sh

@@ -5,6 +5,5 @@ set -ex
 
 export RUSTFLAGS="-D warnings"
 
-cargo check --no-default-features
 cargo check --bins --examples --tests
 cargo test

ci/crossbeam-skiplist.sh

@@ -5,18 +5,9 @@ set -ex
 
 export RUSTFLAGS="-D warnings"
 
-cargo check --no-default-features
 cargo check --bins --examples --tests
 cargo test
 
-if [[ "$RUST_VERSION" == "nightly" ]]; then
-    cargo check --no-default-features --features nightly
+if [[ "$RUST_VERSION" == "nightly"* ]]; then
     cargo test --features nightly
-
-    # Check for no_std environment.
-    cargo check --target thumbv7m-none-eabi --no-default-features
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc,nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features alloc,nightly
 fi

ci/crossbeam-utils.sh

@@ -5,15 +5,9 @@ set -ex
 
 export RUSTFLAGS="-D warnings"
 
-cargo check --no-default-features
 cargo check --bins --examples --tests
 cargo test
 
-if [[ "$RUST_VERSION" == "nightly" ]]; then
-    cargo check --no-default-features --features nightly
+if [[ "$RUST_VERSION" == "nightly"* ]]; then
     cargo test --features nightly
-
-    # Check for no_std environment.
-    cargo check --target thumbv7m-none-eabi --no-default-features
-    cargo check --target thumbv6m-none-eabi --no-default-features --features nightly
 fi

ci/crossbeam.sh

@@ -5,18 +5,9 @@ set -ex
 
 export RUSTFLAGS="-D warnings"
 
-cargo check --no-default-features
 cargo check --bins --examples --tests
 cargo test
 
-if [[ "$RUST_VERSION" == "nightly" ]]; then
-    cargo check --no-default-features --features nightly
+if [[ "$RUST_VERSION" == "nightly"* ]]; then
     cargo test --features nightly
-
-    # Check for no_std environment.
-    cargo check --target thumbv7m-none-eabi --no-default-features
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc
-    cargo check --target thumbv7m-none-eabi --no-default-features --features alloc,nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features nightly
-    cargo check --target thumbv6m-none-eabi --no-default-features --features alloc,nightly
 fi