Update azure-pipelines.yml for Azure Pipelines

azure-pipelines.yml

@@ -6,39 +6,14 @@
 trigger:
 - master
 
-strategy:
-  matrix:
-    windows-stable:
-      imageName: 'vs2017-win2016'
-      rustup_toolchain: stable
-    mac-stable:
-      imageName: 'macos-10.13'
-      rustup_toolchain: stable
-    linux-stable:
-      imageName: 'ubuntu-16.04'
-      rustup_toolchain: stable
-    linux-beta:
-      imageName: 'ubuntu-16.04'
-      rustup_toolchain: beta
-    linux-nightly:
-      imageName: 'ubuntu-16.04'
-      rustup_toolchain: nightly
-
 pool:
-  vmImage: $(imageName)
+  vmImage: 'ubuntu-16.04'
 
 steps:
   - script: |
-      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUSTUP_TOOLCHAIN
+      curl https://sh.rustup.rs -sSf | sh -s -- -y
       echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
     displayName: Install rust
-    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%
-      echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
-    displayName: Windows install rust
-    condition: eq( variables['Agent.OS'], 'Windows_NT' )
   - script: cargo build --all
     displayName: Cargo build
   - script: cargo test --all