Add a cargo xbuild check on CI

azure-pipelines.yml

@@ -55,9 +55,12 @@ steps:
 - script: cargo install cargo-xbuild bootimage --debug
   displayName: 'Install cargo-xbuild and bootimage'
 
-- script: cargo bootimage
+- script: cargo xbuild
   displayName: 'Build'
 
+- script: cargo bootimage
+  displayName: 'Create Bootimage'
+
 - script: rustup component add rustfmt
   displayName: 'Install Rustfmt'