Remove per-commit checking from CI workflow

.github/workflows/check.yml

@@ -1,10 +1,11 @@
 # This workflow runs whenever a PR is opened or updated, or a commit is pushed to main. It runs
 # several checks:
-# - commit_list: produces a list of commits to be checked
 # - fmt: checks that the code is formatted according to rustfmt
 # - clippy: checks that the code does not contain any clippy warnings
+# - semver: checks for semver violations
 # - doc: checks that the code can be documented without errors
 # - hack: check combinations of feature flags
+# - deny: checks licenses, advisories, sources, and bans
 # - msrv: check that the msrv specified in the crate is correct
 permissions:
   contents: read
@@ -23,47 +24,13 @@ concurrency:
 name: check
 jobs:
 
-  commit_list:
-    runs-on: ubuntu-latest
-    steps:
-
-    - uses: actions/checkout@v4
-      with:
-        fetch-depth: 0
-
-    - name: Get commit list (push)
-      id: get_commit_list_push
-      if: ${{ github.event_name == 'push' }}
-      run: |
-        echo "id0=$GITHUB_SHA" > $GITHUB_OUTPUT
-        echo "List of tested commits:" > $GITHUB_STEP_SUMMARY
-        sed -n 's,^id[0-9]\+=\(.*\),- ${{ github.repositoryUrl }}/commit/\1,p' -- $GITHUB_OUTPUT >> $GITHUB_STEP_SUMMARY
-
-    - name: Get commit list (PR)
-      id: get_commit_list_pr
-      if: ${{ github.event_name == 'pull_request' }}
-      run: |
-        git rev-list --reverse refs/remotes/origin/${{ github.base_ref }}..${{ github.event.pull_request.head.sha }} | awk '{ print "id" NR "=" $1 }' > $GITHUB_OUTPUT
-        git diff --quiet ${{ github.event.pull_request.head.sha }} ${{ github.sha }} || echo "id0=$GITHUB_SHA" >> $GITHUB_OUTPUT
-        echo "List of tested commits:" > $GITHUB_STEP_SUMMARY
-        sed -n 's,^id[0-9]\+=\(.*\),- ${{ github.repositoryUrl }}/commit/\1,p' -- $GITHUB_OUTPUT >> $GITHUB_STEP_SUMMARY
-
-    outputs:
-      commits: ${{ toJSON(steps.*.outputs.*) }}
-
   fmt:
     runs-on: ubuntu-latest
     name: nightly / fmt
-    needs: commit_list
-    strategy:
-      fail-fast: false
-      matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install nightly
         uses: dtolnay/rust-toolchain@nightly
         with:
@@ -73,8 +40,7 @@ jobs:
 
   clippy:
     runs-on: ubuntu-latest
-    name: ${{ matrix.toolchain }} / clippy (${{ matrix.commit }})
-    needs: commit_list
+    name: ${{ matrix.toolchain }} / clippy
     permissions:
       contents: read
       checks: write
@@ -83,12 +49,10 @@ jobs:
       matrix:
         # Get early warning of new lints which are regularly introduced in beta channels.
         toolchain: [stable, beta]
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install ${{ matrix.toolchain }}
         uses: dtolnay/rust-toolchain@master
         with:
@@ -101,20 +65,13 @@ jobs:
           clippy_flags: -- -F clippy::suspicious -F clippy::correctness -F clippy::perf -F clippy::style
           github_token: ${{ secrets.GITHUB_TOKEN }}
 
-  # Enable once we have a released crate
   semver:
     runs-on: ubuntu-latest
     name: semver
-    needs: commit_list
-    strategy:
-      fail-fast: false
-      matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install stable
         uses: dtolnay/rust-toolchain@stable
         with:
@@ -128,16 +85,10 @@ jobs:
     # API be documented as only available in some specific platforms.
     runs-on: ubuntu-latest
     name: nightly / doc
-    needs: commit_list
-    strategy:
-      fail-fast: false
-      matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install nightly
         uses: dtolnay/rust-toolchain@nightly
       - name: cargo doc
@@ -150,16 +101,10 @@ jobs:
     # which is required for feature unification
     runs-on: ubuntu-latest
     name: ubuntu / stable / features
-    needs: commit_list
-    strategy:
-      fail-fast: false
-      matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install stable
         uses: dtolnay/rust-toolchain@stable
       - name: cargo install cargo-hack
@@ -174,16 +119,10 @@ jobs:
     # our dependencies.
     runs-on: ubuntu-latest
     name: ubuntu / stable / deny
-    needs: commit_list
-    strategy:
-      fail-fast: false
-      matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install stable
         uses: dtolnay/rust-toolchain@stable
       - name: cargo install cargo-deny
@@ -197,13 +136,11 @@ jobs:
   msrv:
     # check that we can build using the minimal rust version that is specified by this crate
     runs-on: ubuntu-latest
-    needs: commit_list
     # we use a matrix here just because env can't be used in job names
     # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability
     strategy:
       fail-fast: false
       matrix:
-        commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
         msrv: ["1.83"] # We're relying on namespaced-features, which
                        # was released in 1.60
                        #
@@ -217,12 +154,11 @@ jobs:
                        # collapse_debuginfo
                        #
                        # bitfield-struct requires 1.83
-    name: ubuntu / ${{ matrix.msrv }} (${{ matrix.commit }})
+    name: ubuntu / ${{ matrix.msrv }}
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
-          ref: ${{ matrix.commit }}
       - name: Install ${{ matrix.msrv }}
         uses: dtolnay/rust-toolchain@master
         with: