message: Install rustfmt for testing in CI
diff: @@ -16,6 +16,10 @@ steps:
  - bash: rustup component add clippy || echo "clippy not available"
  displayName: "Install clippy (maybe)"
  +# Some tests also rely on rustfmt
  +- bash: rustup component add rustfmt || echo "rustfmt not available"
  + displayName: "Install rustfmt (maybe)"
  +
  # Deny warnings on CI to avoid warnings getting into the codebase, and note the
  # `force-system-lib-on-osx` which is intended to fix compile issues on OSX where
  # compiling curl from source on OSX yields linker errors on Azure.
  