CarthageCache generate a hash key based on the content of your Cartfile.resolved and checks if there is a cache archive (a zip file of your Carthage/Build directory) associated to that hash. If there is one it will download it and install it in your project avoiding the need to run carthage bootstrap. ----------------------Thanks Mr.Blas but now we are facing dependency conflict with Fastlane 2.144-------------------- What I want to solve: Dependency conflict with Fastlane 2.144 What I did: 1. Changed name of this gem to "carthage_cache_res" 2. Fixed runtime dependencies: aws-sdk < 3, commander = 4.3.8 3. Changed system dependency versions: ruby > 2.6, xcode 11.x