install clang

Author: mpwsh

.github/workflows/ci.yaml

@@ -46,6 +46,8 @@ jobs:
       - name: Install Linux musl-tools
         if: contains(matrix.platform.target, 'musl')
         run: sudo apt-get install --yes --no-install-recommends musl-tools
+      - name: Install clang
+        run: sudo apt-get install --yes --no-install-recommends clang
       - name: Build binary
         uses: houseabsolute/actions-rust-cross@v0
         with: