message: ci: update for changes in GitHub Actions
diff: @@ -78,8 +78,8 @@ jobs:
  # FIXME: to work around bugs in latest cross release, install master.
  # See: https://github.com/rust-embedded/cross/issues/357
  cargo install --git https://github.com/rust-embedded/cross
  - echo "::set-env name=CARGO::cross"
  - echo "::set-env name=TARGET::--target ${{ matrix.target }}"
  + echo "CARGO=cross" >> $GITHUB_ENV
  + echo "TARGET=--target ${{ matrix.target }}" >> $GITHUB_ENV
  - name: Show command used for Cargo
  run: |
  