xcodebuild Exit Code 65: What it is and how to solve for iOS and macOS builds

The text delves into the challenges faced by iOS and macOS developers when encountering xcodebuild exit code 65, a common error that signifies bad data input during the build process. This exit code is particularly troublesome because xcodebuild often fails to provide context for the issue, leaving developers to troubleshoot blindly. The problem is compounded in continuous integration (CI) environments like CircleCI, where hardware limitations and the asynchronous booting of the iOS Simulator can exacerbate the issue, often causing builds to fail. To mitigate these challenges, developers are advised to proactively boot the iOS Simulator using command-line tools and allow sufficient time for it to initialize before commencing the build process. Despite these hurdles, ongoing collaboration with Apple's Developer Tools Team aims to enhance the stability and efficiency of the developer toolchain, providing a more seamless experience for developers.

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