Github Actions Coveralls failing to upload multiple coverage files for ruby parallel specs

Hey all!

Files that are created:

apps/ruby/api/coverage/lcov-1.info
apps/ruby/api/coverage/lcov-2.info
apps/ruby/api/coverage/lcov-3.info
apps/ruby/api/coverage/lcov-4.info
apps/ruby/api/coverage/lcov-5.info

Github Action Runner Command:

      - name: Coveralls GitHub Action
        uses: coverallsapp/github-action@v2.1.2
        with:
          base-path: "apps/ruby/api"
          github-token: ${{ secrets.GITHUB_TOKEN }}
          debug: true
          allow-empty: true

I have tried all base path combinations and even removing it — same error as below

Runner Type: ARM Linux

Error on GitHub action run:

Run coverallsapp/github-action@v2.1.2
  with:
    base-path: apps/ruby/api
    github-token: ***
    debug: true
    allow-empty: true
    coveralls-endpoint: https://coveralls.io
Run mkdir -p ~/bin/
  mkdir -p ~/bin/
  cd ~/bin/
  curl -sLO https://github.com/coverallsapp/coverage-reporter/releases/latest/download/coveralls-linux.tar.gz
  curl -sLO https://github.com/coverallsapp/coverage-reporter/releases/latest/download/coveralls-checksums.txt
  cat coveralls-checksums.txt | grep coveralls-linux.tar.gz | sha[2](https://github.com/team/actions/runs/5062916311/jobs/9088979319?pr=625#step:8:2)56sum --check
  tar -xzf coveralls-linux.tar.gz
  rm coveralls-checksums.txt
  echo ~/bin >> $GITHUB_PATH
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
coveralls-linux.tar.gz: OK
Run coveralls --debug --allow-empty --base-path apps/ruby/api  
  coveralls --debug --allow-empty --base-path apps/ruby/api  
  shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
  env:
    COVERALLS_DEBUG: true
    COVERALLS_CARRYFORWARD_FLAGS: 
    COVERALLS_FLAG_NAME: 
    COVERALLS_PARALLEL: 
    COVERALLS_ENDPOINT: https://coveralls.io
    COVERALLS_GIT_BRANCH: 
    COVERALLS_GIT_COMMIT: 
    COVERALLS_REPO_TOKEN: ***
    COVERALLS_COMPARE_REF: 
    COVERALLS_COMPARE_SHA: 
    COVERALLS_SOURCE_HEADER: github-action
/runner/_work/_temp/4ea201b2-fb18-482[3](https://github.com/team/actions/runs/5062916311/jobs/9088979319?pr=625#step:8:3)-bc7[5](https://github.com/team/actions/runs/5062916311/jobs/9088979319?pr=625#step:8:5)-e8911a8eb7c0.sh: line 1: /home/runner/bin/coveralls: Input/output error
Error: Process completed with exit code 12[6](https://github.com/team/actions/runs/5062916311/jobs/9088979319?pr=625#step:8:6).

Any help would be greatly appreciated!

Start with the GitHub Actions Coveralls step using coverallsapp/github-action@v2.1.2 and the generated apps/ruby/api/coverage/lcov-1.info through lcov-5.info files. Reproduce the ARM Linux runner command with debug enabled, then investigate why the coveralls executable fails before upload; done means all parallel coverage files upload successfully.