Debug-action-cache

When using GitHub Actions, debugging the cache often involves setting: ACTIONS_STEP_DEBUG: true

Two different machines running the exact same code produce different output hashes, leading to "cache poisoning." How to Debug the Cache: Common Strategies debug-action-cache

Are your file paths absolute or relative? Always prefer relative paths for better portability. When using GitHub Actions, debugging the cache often

In systems like Bazel, you can use flags like --execution_log_json_file . This allows you to see the exact metadata sent to the cache. You can compare logs from two different builds to see which file or environment variable caused the discrepancy. 2. Identifying "Dirty" Environment Variables When using GitHub Actions