message: ci: override current toolchain
diff: @@ -5,6 +5,7 @@ steps:
  - bash: |
  curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $TOOLCHAIN
  rustup update $TOOLCHAIN
  + rustup override set $TOOLCHAIN
  echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
  displayName: Install rust - Unix
  condition: ne( variables['Agent.OS'], 'Windows_NT' )
  @@ -14,6 +15,7 @@ steps:
  curl -sSf -o rustup-init.exe https://win.rustup.rs
  rustup-init.exe -y --default-toolchain %TOOLCHAIN%
  rustup update %TOOLCHAIN%
  + rustup override set %TOOLCHAIN%
  echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
  displayName: Install rust - Windows
  condition: eq( variables['Agent.OS'], 'Windows_NT' )
  