Brew core and cask are older on the Xcode 11.6 stack than the 11.5 stack

Description of the issue

The Xcode 11.6 stack is using an older version of brew cask and core

* brew: Homebrew 2.4.7
Homebrew/homebrew-core (git revision fba9; last commit 2020-05-28)
Homebrew/homebrew-cask (git revision 92f13; last commit 2020-05-27)

than the Xcode 11.5 stack

* brew: Homebrew 2.4.7
Homebrew/homebrew-core (git revision 1c6836; last commit 2020-07-16)
Homebrew/homebrew-cask (git revision 9e6cc5; last commit 2020-07-16)

On the Xcode 11.6 stack it also isn’t possible to run brew update. Running with remote access and running brew doctor gives the following warning

vagrant@prd-atl-std-b-xcode-11-6-200728134735-3aTCgwTYj3atcpRaYS3A3f ~ % brew doctor
Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Suspicious git origin remote found.
The current git origin is:

With a non-standard origin, Homebrew won't update properly.
You can solve this by setting the origin remote:
  git -C "/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core" remote set-url origin

Because of this I am unable to update carthage to 0.35.0 which has a required fix to support handling precompiled binaries from different version of swift.


Xcode 11.6 stack


  • Does a “Rebuild” help? (You can trigger a rebuild from the Build’s page, by clicking the “Rebuild” button in the top right corner of a finished build) : No
  • Does a rebuild without caches help? (You can remove the Cache:Pull and Cache:Push steps temporarily to not to use the cache, or you can delete all the caches on the Settings tab of the app. : No
  • Does the issue happen sporadically, or every time? : Every time
  • Does upgrading the build Step to the latest version help? : No
  • When did the issue start? : When I updated to use the Xcode 11.6 stack

Local reproduction


Local reproduction: Linux / Android (docker based) stack builds


Build log

This is the important part. brew update does nothing and brew update carthage don’t know that there’s a new version available.

+ brew update

==> Homebrew is run entirely by unpaid volunteers. Please consider donating:

Updated 1 tap (wix/brew).

==> Updated Formulae


+ brew upgrade carthage

Warning: carthage 0.34.0 already installed
1 Like

Hi @CraigSiemens,

Thank you for reporting this. I will share it with the infra team.

Also experiencing this, it seems two taps are not being updated by the brew-install step, specifically homebrew/core and homebrew/cask.


Updated 3 taps (homebrew/core, homebrew/cask and wix/brew).


Updated 1 tap (wix/brew).

@CraigSiemens @jean.mainguy, thanks again for reporting! The team was made aware and the fix is in this week’s sprint, should be available by the end of the week.

1 Like

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