For install Rust nightly in CI script.

SergioBenitez · SergioBenitez · commit 7b1995c84af2 · 2020-09-12T03:21:49.000-07:00
diff --git a/.github/azure-pipelines-template.yml b/.github/azure-pipelines-template.yml
@@ -64,6 +64,7 @@ jobs:
 
   # Sanity check version information.
   - script: |
+      rustup toolchain install $(rust_version)
       rustup default $(rust_version)
       rustc -Vv && cargo -V
     displayName: 'Rust/Cargo Version Information'
