Pin nightly to `nightly-2022-02-08` in CI (#1182)

        - name: Clippy

          run: cargo clippy

        - name: Unused Dependencies

          run: cargo +nightly udeps

          run: cargo +nightly-2022-02-08 udeps

        - name: Additional per-crate checks

          run: ../tools/additional-per-crate-checks.sh ./sdk/ ../tools/ci-cdk/

    env:

        default: true

    - uses: actions-rs/toolchain@v1

      with:

        toolchain: nightly

        toolchain: nightly-2022-02-08

        default: false

    - name: Cache cargo bin

      uses: actions/cache@v2

    - name: Install additional cargo binaries

      run: |

        if [[ ! -f ~/.cargo/bin/cargo-udeps ]]; then

          cargo +nightly install cargo-udeps

          cargo +nightly-2022-02-08 install cargo-udeps

        fi

        if [[ ! -f ~/.cargo/bin/cargo-hack ]]; then

          cargo install cargo-hack