message: Use azure condition for rust-src.
diff: @@ -17,10 +17,8 @@ steps:
  displayName: "Install clippy (maybe)"
  # This is needed for standard library tests.
  -- bash: |
  - if [ "$TOOLCHAIN" = "nightly" ]; then
  - rustup component add rust-src
  - fi
  +- bash: rustup component add rust-src
  + condition: and(succeeded(), eq(variables['TOOLCHAIN'], 'nightly'))
  displayName: "Install rust-src (maybe)"
  # Deny warnings on CI to avoid warnings getting into the codebase, and note the
  