Can I use 2-byte chars in cache files?

[teramotodaiki]

I have cached some files including UTF-8 chars (which are Japanese), but these were broken after restore_cache. Here is my config.yml:

# Javascript Node CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-javascript/ for more details
#
version: 2
jobs:
  build:
    docker:
      - image: circleci/node:8.14
    working_directory: ~/repo

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "package.json" }}
            # fallback to using the latest cache if no exact match is found
            - v1-dependencies-

      - run: npm install

      - save_cache:
          paths:
            - node_modules
          key: v1-dependencies-{{ checksum "package.json" }}

      - run: npm test
      - run: npm run build
      - save_cache:
          paths:
            - dist
          key: v1-dist-{{ .Environment.CIRCLE_SHA1 }}
      - run: ls dist -a

  deploy:
    docker:
      - image: google/cloud-sdk
    steps:
      - run: apt-get install -y sudo # https://discuss.circleci.com/t/sudo-command-not-found/14208/4
      - run: echo $GCLOUD_SERVICE_KEY | base64 --decode | sudo gcloud auth activate-service-account --key-file=-
      - run: sudo gcloud --quiet config set project ${GOOGLE_PROJECT_ID}
      - run: sudo gcloud --quiet config set compute/zone ${GOOGLE_COMPUTE_ZONE}

      - restore_cache:
          keys:
            - v1-dist-{{ .Environment.CIRCLE_SHA1 }}

      - run:
          command: ls dist -a
          working_directory: /home/circleci/repo/
      - run:
          name: Upload to GCS
          command: gsutil -m -h "Cache-Control:public, max-age=86400" cp -r dist/* gs://(bucket)
          working_directory: /home/circleci/repo/

workflows:
  version: 2
  build-and-deploy:
    jobs:
      - build
      - deploy:
          requires:
            - build
          filters:
            branches:
              only: master

And these are screenshots showing result of ls -a in Circle CI.

• deploy:

How can I cache these files correctly?

[teramotodaiki]

This is another screenshot in the build job: