Fingerprint cache is not being saved (fingerprint-db)

[alansikora]

Description of the bug

Fingerprint cache (fingerprint-db) is not found.

To Reproduce

Run a simple Github Action with:

jobs:
  fingerprint:
    runs-on: ubuntu-latest
    # REQUIRED: limit concurrency when pushing main(default) branch to prevent conflict for this action to update its fingerprint database
    concurrency: fingerprint-${{ github.event_name != 'pull_request' && 'main' || github.run_id }}
    permissions:
      # REQUIRED: Allow comments of PRs
      pull-requests: write # Allow comments on PRs
      # REQUIRED: Allow updating fingerprint in action caches
      actions: write
      # OPTIONAL: Allow reading of repo contents for private projects
      contents: read

    steps:
      - name: 📦 Enable corepack
        run: corepack enable

      - name: 🏗 Setup repo
        uses: actions/checkout@v4

      - name: 🏗 Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: 22.14.0
          cache: yarn
          cache-dependency-path: yarn.lock

      - name: 📦 Install dependencies
        run: yarn install --immutable

      - name: Check fingerprint
        id: fingerprint
        uses: expo/expo-github-action/fingerprint@main
        with:
          working-directory: ./domain/exchange/mobile

There are not logs that would suggest a cache is being saved.

Expected behavior

Cache should exist in subsequent runs.

Actual behavior

Cache does not exist in subsequent runs.

[yonitou]

Same issue here @Kudo

[ThunbergOlle]

Same here perhaps introduced when
https://github.com/expo/expo-github-action/pull/334/files#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519R24 upgraded the cache pipeline.

Github Action Cache issue:
actions/cache#1556