Fix Windows CI

azure-pipelines.yml

@@ -32,7 +32,7 @@ stages:
             condition: ne( variables['Agent.OS'], 'Windows_NT' )
           - script: |
                 curl -sSf -o rustup-init.exe https://win.rustup.rs
-                rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN%
+                rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN% --default-host x86_64-pc-windows-msvc
                 echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
             displayName: Windows install rust
             condition: eq( variables['Agent.OS'], 'Windows_NT' )
@@ -72,7 +72,7 @@ stages:
           - script: |
               set CARGO_HOME=%USERPROFILE%\.cargo
               curl -sSf -o rustup-init.exe https://win.rustup.rs
-              rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN%
+              rustup-init.exe -y --default-toolchain %RUSTUP_TOOLCHAIN% --default-host x86_64-pc-windows-msvc
               set PATH=%PATH%;%USERPROFILE%\.cargo\bin
               echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
             displayName: Windows install rust