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It's possible that the tool can be in the process of shutting down, which could result in the temp directory being deleted after the shutdown hooks run before we check if `output` exists. If this happens, we shouldn't crash but just carry on as if no devices were found as the tool will exit on its own. Fixes https://github.com/flutter/flutter/issues/141892 --------- Co-authored-by: Andrew Kolos <andrewrkolos@gmail.com>