message: ci: fix rustc version to rust-toolchain
diff: @@ -66,12 +66,14 @@ commands:
  - run:
  name: Set cargo Environment
  command: |
  + # Turn on the experimental feature resolver in cargo. See:
  # https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#features
  export CARGOFLAGS=$(cat cargo-flags)
  echo 'export CARGOFLAGS='${CARGOFLAGS} >> $BASH_ENV
  # Use nightly version of cargo to access the new feature resolver
  - echo 'export CARGO=$(rustup which cargo --toolchain $RUST_NIGHTLY)' >> $BASH_ENV
  - # Turn on the experimental feature resolver in cargo. See:
  + echo 'export CARGO="$(rustup which cargo --toolchain $RUST_NIGHTLY)"' >> $BASH_ENV
  + # Pin the version of RUSTC used for all invocations of cargo
  + echo 'export RUSTUP_TOOLCHAIN="$(cat rust-toolchain)"' >> $BASH_ENV
  install_docker_linter:
  steps:
  - run:
  