Fix headless CI (#534)

* Fix?

* test

* Close after 500ms

* Revert "Close after 500ms"

This reverts commit c1acdc6.

* Revert "test"

This reverts commit 84898d9.

* Second try

* Fix check

* Update rust.yml

* Revert "Update rust.yml"

This reverts commit 088dd6f.

.github/workflows/rust.yml

@@ -32,6 +32,9 @@ jobs:
           components: rustfmt, clippy
           override: true
 
+      - if: startsWith(matrix.os, 'ubuntu')
+        run: sudo apt-get update && sudo apt-get install -y libfontconfig1-dev
+
       - name: Check
         uses: actions-rs/cargo@v1
         with:
@@ -83,6 +86,6 @@ jobs:
           toolchain: stable
           override: true
 
-      - run: sudo apt-get update && sudo apt-get install -y xvfb
+      - run: sudo apt-get update && sudo apt-get install -y xvfb libfontconfig1-dev
 
       - run: xvfb-run -a cargo run --example headless --features="headless"