Download the std sources ci so the compile fail errors line up with developer machines

Author: Brezak

.github/workflows/ci.yml

@@ -39,6 +39,9 @@ jobs:
             target/
           key: ${{ runner.os }}-cargo-build-stable-${{ hashFiles('**/Cargo.toml') }}
       - uses: dtolnay/rust-toolchain@stable
+        with:
+          # Compile fail tests need std sources for the errors to display correctly
+          components: std
       - name: Install Linux dependencies
         uses: ./.github/actions/install-linux-deps
       - name: Build & run tests