flex 2.6.4_2 is already installed and up-to-date. To reinstall 2.6.4_2, run: brew reinstall flex

bison 3.8.2 is already installed and up-to-date. To reinstall 3.8.2, run: brew reinstall bison

google-benchmark 1.9.0 is already installed and up-to-date. To reinstall 1.9.0, run: brew reinstall google-benchmark