Brew: error on brew upgrade

[kirk86]

Recently I've been trying to upgrade the packages with brew upgrade and I get the following errors:

brew cleanup:
Warning: Skipping htop: most recent version 2.0.2_1 not installed
Warning: Skipping sip: most recent version 4.19.6_3 not installed
Warning: Skipping youtube-dl: most recent version 2018.01.07 not installed
Warning: Skipping imagemagick: most recent version 7.0.7-19 not installed

brew upgrade:
==> Upgrading 4 outdated packages, with result:
htop 2.0.2_1, sip 4.19.6_3, youtube-dl 2018.01.07, imagemagick 7.0.7-19
htop: This formula either does not compile or function as expected on macOS
versions newer than Sierra due to an upstream incompatibility.
Error: An unsatisfied requirement failed this build.

Any ideas?

[alyssais]

htop isn't compatible with macOS High Sierra. You should probably brew uninstall it.

See https://github.com/hishamhm/htop/issues/682.

[alyssais]

I wonder if brew upgrade should just skip packages that fail a macOS version requirement...

[ilovezfs]

This is expected behavior. Please see

https://github.com/hishamhm/htop/issues/682.

Also, the template should always be filled out and this issue should have been filed in homebrew/core since it's specific to one formula.