Trying to fix Azure Pipelines

.azure/azure-pipelines.yml

@@ -18,6 +18,7 @@ steps:
       set -e
       curl https://sh.rustup.rs -sSf | sh -s -- -y --no-modify-path --default-toolchain `cat rust-toolchain`
       export PATH=$HOME/.cargo/bin:$PATH
+      apt-get -y install libxcb-composite0-dev libx11-dev
       rustc -Vv
       echo "##vso[task.prependpath]$HOME/.cargo/bin"
       rustup component add rustfmt --toolchain `cat rust-toolchain`