Test features in CI

Author: joshtriplett

.github/workflows/main.yml

@@ -33,8 +33,8 @@ jobs:
     - name: Install Rust (rustup)
       run: rustup update ${{ matrix.rust }} --no-self-update && rustup default ${{ matrix.rust }}
       shell: bash
-    - run: cargo test --no-default-features --locked
-    - run: cargo test
+    - run: cargo test --locked
+    - run: cargo test --features https,ssh
     - run: cargo run -p systest
     - run: cargo test -p git2-curl