Go back to tarpaulin-based coverage

.github/workflows/main.yml

@@ -56,54 +56,18 @@ jobs:
           args: --all-features --all-targets -- -D warnings
 
   coverage:
-    name: Coverage (+nightly)
-    # The large timeout is to accommodate nightly builds
-    timeout-minutes: 45
+    name: Code Coverage
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.3.4
+      - uses: actions-rs/toolchain@v1.0.7
         with:
-          persist-credentials: false
-
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: nightly
+          toolchain: stable
           override: true
-          profile: minimal
-          components: llvm-tools-preview
-
-      - name: Install rustfilt symbol demangler
-        run: |
-          cargo install rustfilt
-
-      - name: Rerun tests for coverage
-        env:
-          RUSTFLAGS: -Zinstrument-coverage -C link-dead-code -C debuginfo=2
-          LLVM_PROFILE_FILE: "${{ github.workspace }}/test.%p.profraw"
-          ZEBRA_SKIP_NETWORK_TESTS: 1
-          CARGO_INCREMENTAL: 0
-        run: |
-          cargo test --all-features
-          cargo test --all-features --no-run --message-format=json | jq -r "select(.profile.test == true) | .filenames[]" | grep -v dSYM - > filenames.txt
-
-      - name: Merge coverage data
-        run: |
-          $(rustc --print target-libdir)/../bin/llvm-profdata merge test.*.profraw -o test.profdata
-
-      - name: Generate detailed html coverage report for github artifact
-        run: |
-          $(rustc --print target-libdir)/../bin/llvm-cov show -format=html -ignore-filename-regex=".*/.cargo/registry/.*" -ignore-filename-regex=".*/.cargo/git/.*" -ignore-filename-regex=".*/.rustup/.*" -Xdemangler=rustfilt -show-instantiations -output-dir=./coverage -instr-profile=./test.profdata $(printf -- "-object %s " $(cat filenames.txt))
-
-      - name: Generate json coverage report for codecov
-        run: |
-          $(rustc --print target-libdir)/../bin/llvm-cov export -format=text -instr-profile=test.profdata $(printf -- "-object %s " $(cat filenames.txt)) > "lcov.info"
-
-      - uses: actions/upload-artifact@v2
+      - name: Run cargo-tarpaulin
+        uses: actions-rs/tarpaulin@v0.1.3
         with:
-          name: coverage
-          path: |
-            ./coverage
-            ./lcov.info
-
+          version: '0.18.0-alpha3'
+          timeout: 300
       - name: Upload coverage report to Codecov
         uses: codecov/codecov-action@v1.5.2