Migrate nosetests to github actions

.github/workflows/ci.yaml

@@ -190,3 +190,44 @@ jobs:
           . venv/bin/activate
           python -m pip install -U pip setuptools wheel coveralls coverage pre-commit pytest-cov pytest-benchmark
           pytest --benchmark-disable --cov --cov-report= tests/
+
+
+  nosetests-linux:
+    name: Run nosetests Python ${{ matrix.python-version }} (Linux)
+    runs-on: ubuntu-latest
+    needs: prepare-tests-linux
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [3.6, 3.7, 3.8, 3.9, 3.10-dev]
+    steps:
+      - name: Check out code from GitHub
+        uses: actions/checkout@v2.3.4
+      - name: Set up Python ${{ matrix.python-version }}
+        id: python
+        uses: actions/setup-python@v2.2.2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Restore Python virtual environment
+        id: cache-venv
+        uses: actions/cache@v2.1.6
+        with:
+          path: venv
+          key:
+            ${{ runner.os }}-${{ steps.python.outputs.python-version }}-${{
+            needs.prepare-tests-linux.outputs.python-key }}
+      - name: Fail job if Python cache restore failed
+        if: steps.cache-venv.outputs.cache-hit != 'true'
+        run: |
+          echo "Failed to restore Python venv from cache"
+          exit 1
+      - name: Run pytest
+        run: |
+          . venv/bin/activate
+          - "pip install safety pipenv numpy tzlocal nose coverage coveralls -U"
+          - "pip freeze | safety check --stdin"
+          - "nosetests -s --with-coverage --cover-inclusive --cover-package=prospector tests/"
+          - "mv .coverage .coverage.x"
+          - "coverage run --parallel-mode prospector/run.py || true"
+          - "coverage combine"
+          - "coverage report --show-missing"