[ci] Partition Coverage (#2198)

Author: patrick-ogrady

.github/actions/setup/action.yml

@@ -16,8 +16,6 @@ runs:
         path: |
           ~/.cargo/registry
           ~/.cargo/git
-          ~/AppData/Local/cargo/registry
-          ~/AppData/Local/cargo/git
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
         restore-keys: |
           ${{ runner.os }}-cargo-registry-
@@ -36,7 +34,7 @@ runs:
       with:
         path: |
           ~/.cargo/bin/cargo-cache
-          ~/AppData/Local/cargo/bin/cargo-cache.exe
+          ~/.cargo/bin/cargo-cache.exe
         key: ${{ runner.os }}-cargo-cache-${{ steps.rust-version.outputs.rust_version }}
     - name: Maintain cargo cache
       continue-on-error: true

.github/workflows/coverage.yml

@@ -10,16 +10,20 @@ permissions:
   contents: read
 
 concurrency:
-  group: coverage-${{ github.head_ref }}
+  group: coverage-${{ github.head_ref || github.ref_name || github.run_id }}
   cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
   Coverage:
+    name: "Coverage (partition: ${{ matrix.partition }}/8)"
     runs-on: ubuntu-latest
     timeout-minutes: 90
+    strategy:
+      matrix:
+        partition: [1, 2, 3, 4, 5, 6, 7, 8]
     steps:
     - name: Checkout repository
       uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
@@ -46,15 +50,16 @@ jobs:
     - name: Remove fuzz targets from Cargo.toml
       run: |
         sed -i.bak '/fuzz/d' Cargo.toml
-    - name: Install cargo-llvm-cov
+    - name: Install coverage tooling
       uses: taiki-e/install-action@0c5db7f7f897c03b771660e91d065338615679f4 # v2.60.0
       with:
-        tool: [email protected]
+        tool: [email protected],[email protected]
     - name: Generate coverage report
-      run: cargo llvm-cov --workspace --lcov --output-path lcov.info -- --include-ignored
+      run: cargo llvm-cov nextest --workspace --lcov --output-path lcov.info --partition hash:${{ matrix.partition }}/8 --run-ignored all
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
       with:
         files: lcov.info
         fail_ci_if_error: true
         token: ${{ secrets.CODECOV_TOKEN }}
+        flags: coverage-partition-${{ matrix.partition }}

.github/workflows/fast.yml

@@ -9,6 +9,10 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: tests-fast-${{ github.head_ref || github.ref_name || github.run_id }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 env:
   CARGO_TERM_COLOR: always
   UDEPS_VERSION: 0.1.57

codecov.yml

@@ -5,6 +5,7 @@ comment:
   require_head: false
   require_base: false
   hide_project_coverage: false
+  after_n_builds: 8
 
 coverage:
   status: