experiment: use nextest + llvm-cov for coverage

Author: sethdusek

.github/workflows/ci.yml

@@ -70,16 +70,12 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           override: true
-      - name: Install cargo-binstall
-        uses: cargo-bins/[email protected]
-      - name: Install cargo-tarpaulin
-        uses: actions-rs/cargo@v1
-        with:
-          command: binstall
-          args: cargo-tarpaulin --no-confirm
+          components: llvm-tools-preview
+      - uses: taiki-e/install-action@cargo-llvm-cov
+      - uses: taiki-e/install-action@nextest
       - name: Generate code coverage
         run: |
-          cargo tarpaulin --avoid-cfg-tarpaulin --timeout=360 --out lcov --exclude-files 'bindings/**/*.*' --exclude-files 'ergo-rest/src/reqwest.rs' --exclude-files 'ergo-rest/src/reqwest/**/*.*' --exclude-files 'ergo-rest/src/wasm_timer.rs' --exclude-files 'ergo-rest/src/wasm_timer/**/*.*'
+          cargo llvm-cov --lcov --output-path lcov.info --ignore-filename-regex "bindings/.*|ergo-rest/src/reqwest.*|ergo-rest/src/wasm_timer.*" nextest
       - name: Push code coverage results to coveralls.io
         uses: coverallsapp/github-action@master
         with: