diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 52caf553f1..775e4f5e19 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -47,6 +47,28 @@ jobs:
         --slave /usr/bin/gfortran gfortran /usr/bin/gfortran-${GCC_V} \
         --slave /usr/bingcov gcov /usr/bin/gcov-${GCC_V}
 
+    - name: Install Rust macOS
+      if: contains( matrix.os, 'macos')
+      run: |
+        curl https://sh.rustup.rs -sSf | sh -s -- -y
+
     - name: Install GFortran macOS
       if: contains( matrix.os, 'macos')
       run: brew install gcc@${GCC_V} || brew upgrade gcc@${GCC_V} || true
+
+    - name: Build
+      run: |
+        export PATH="$HOME/.cargo/bin:$PATH"
+        cargo build --verbose
+
+    - name: Run tests
+      run: |
+        export PATH="$HOME/.cargo/bin:$PATH"
+        cargo test --verbose
+
+    # TODO: integrate these with `cargo test` above
+    - name: Run manual tests
+      run: |
+        export PATH="$HOME/.cargo/bin:$PATH"
+        cargo run -- --help
+        ./run_tests.sh