Run cargo-tarpaulin at TOP dir

Author: termoshtt

.github/workflows/rust.yml

@@ -33,9 +33,7 @@ jobs:
       - uses: actions/checkout@v2
       - name: Generate code coverage
         run: |
-          cd ndarray-linalg
-          cargo tarpaulin --verbose --features=intel-mkl --out Xml
-          mv *.xml ..
+          cargo tarpaulin --verbose --features=intel-mkl --out Xml --manifest-path=ndarray-linalg/Cargo.toml
       - name: Upload to codecov.io
         uses: codecov/codecov-action@v1
         with: