Set up CI with Azure Pipelines

[skip ci]

Author: alexcrichton

.travis.yml

@@ -0,0 +1,25 @@
+trigger:
+  - master
+
+jobs:
+  - job: Linux
+    pool:
+      vmImage: ubuntu-16.04
+    steps:
+      - template: ci/azure-steps.yml
+    strategy:
+      matrix:
+        stable:
+          TOOLCHAIN: stable
+        beta:
+          TOOLCHAIN: beta
+        nightly:
+          TOOLCHAIN: nightly
+  - job: docs
+    steps:
+      - template: ci/azure-install-rust.yml
+      - script: cargo doc --no-deps --all-features
+      - script: curl -LsSf https://git.io/fhJ8n | rustc - && (cd target/doc && ../../rust_out)
+        condition: and(succeeded(), eq(variables['Build.SourceBranch'], 'refs/heads/master'))
+        env:
+          GITHUB_DEPLOY_KEY: $(GITHUB_DEPLOY_KEY)

azure-pipelines.yml

@@ -0,0 +1,23 @@
+steps:
+  - bash: |
+      set -e
+      toolchain=$TOOLCHAIN
+      if [ "$toolchain" = "" ]; then
+        toolchain=stable
+      fi
+      curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $toolchain
+      echo "##vso[task.prependpath]$HOME/.cargo/bin"
+    displayName: Install rust (unix)
+    condition: ne( variables['Agent.OS'], 'Windows_NT' )
+
+  - script: |
+      curl -sSf -o rustup-init.exe https://win.rustup.rs
+      rustup-init.exe -y --default-toolchain stable-%TARGET%
+      echo ##vso[task.prependpath]%USERPROFILE%\.cargo\bin
+    displayName: Install rust (windows)
+    condition: eq( variables['Agent.OS'], 'Windows_NT' )
+
+  - script: |
+        rustc -Vv
+        cargo -V
+    displayName: Query rust and cargo versions

ci/azure-install-rust.yml

@@ -0,0 +1,5 @@
+steps:
+  - template: azure-install-rust.yml
+
+  - script: cargo test
+    displayName: Run tests