Failed to save: Failed to CreateCacheEntry: Received non-retryable error: Failed request: (409) Conflict: cache entry with the same key, version, and scope already exists

Cache save failed.

Treating doxygen as a formula. For the cask, use homebrew/cask/doxygen or specify the `--cask` flag. To silence this message, use the `--formula` flag.

xz 5.6.4 is already installed and up-to-date. To reinstall 5.6.4, run: brew reinstall xz

autoconf 2.72 is already installed and up-to-date. To reinstall 2.72, run: brew reinstall autoconf