Error running brew doctor: Unexpected method 'appcast' called on Cask tcl.

[OldManLink]

Verification

• I understand that if I ignore these instructions, my issue may be closed without review.
• I have retried my command with --force.
• I ran brew update-reset && brew update and retried my command.
• I ran brew doctor, fixed as many issues as possible and retried my command.
• I have checked the instructions for reporting bugs.
• I made doubly sure this is not a checksum does not match / SHA256 mismatch error (do not open an issue before trying to open a PR to fix first).

Description of issue

When running brew doctor I get an error message directing me here to report a bug

Command that failed

brew doctor

Output of command with --verbose --debug

Too big to include in its entirety (> 180k), but the first portion of the output looks like this:

15:28 $ brew doctor --verbose --debug
==> Checking check_access_directories
==> Checking check_brew_git_origin
/usr/bin/env /usr/local/Homebrew/Library/Homebrew/shims/shared/git --version
==> Checking check_broken_sdks
==> Checking check_cask_deprecated_disabled
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading dbeaver-community
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading docker
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading gimp
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading insomnia
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading kubecontext
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading mysql-shell
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading postman
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading qlgradle
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromInstalledPathLoader): loading tcl
Error: Unexpected method 'appcast' called on Cask tcl.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading dbeaver-community
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading docker
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading gimp
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading insomnia
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading kubecontext
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading mysql-shell
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading postman
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading qlgradle
/usr/local/Homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromInstalledPathLoader): loading tcl
Error: Unexpected method 'appcast' called on Cask tcl.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
==> Checking check_cask_environment_variables
==> Cask Environment Variables:
BUNDLE_PATH
CHRUBY_VERSION
GEM_HOME
GEM_PATH
HOMEBREW_CASK_OPTS
LC_ALL
PATH
RBENV_VERSION
RUBYLIB
RUBYOPT
RUBYPATH
SHELL
==> Checking check_cask_install_location
==> Checking check_cask_load_path
==> $LOAD_PATHS
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/bundler-2.5.9/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/warning-1.4.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/vernier-1.0.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/extensions/arm64-darwin-20/3.3.0-static/vernier-1.0.1
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/tapioca-0.14.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/yard-sorbet-0.8.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/yard-0.9.36/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/stackprof-0.2.26/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/extensions/arm64-darwin-20/3.3.0-static/stackprof-0.2.26
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/spoom-1.3.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/thor-1.3.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/sorbet-static-and-runtime-0.5.11406/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/sorbet-0.5.11406/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/sorbet-static-0.5.11406-universal-darwin/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/simplecov-cobertura-2.1.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/simplecov-0.22.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/simplecov_json_formatter-0.1.4/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/simplecov-html-0.12.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/ruby-prof-1.7.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/extensions/arm64-darwin-20/3.3.0-static/ruby-prof-1.7.0

Output of brew doctor and brew config

15:31 $ brew doctor
Error: Unexpected method 'appcast' called on Cask tcl.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
Error: Unexpected method 'appcast' called on Cask tcl.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
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: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  [email protected]
  node@16
  [email protected]
  [email protected]
  youtube-dl
✘-1 ~ 
15:31 $ brew config
HOMEBREW_VERSION: 4.3.3-20-g2051e05
ORIGIN: https://github.com/Homebrew/brew.git
HEAD: 2051e053ee3303654d340e4ceb7c4ea3c20a357f
Last commit: 32 minutes ago
Core tap HEAD: f82b0b07c331af617edfb47df842d0c152a264f3
Core tap last commit: 16 minutes ago
Core tap JSON: 04 Jun 13:23 UTC
Core cask tap HEAD: 6b4511038e9a3da39af7f34b31958f85ba1fb581
Core cask tap last commit: 30 minutes ago
Core cask tap JSON: 04 Jun 13:23 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: /private/tmp/com.apple.launchd.sMcQXpbrUY/org.macosforge.xquartz:0
HOMEBREW_EDITOR: vi
HOMEBREW_MAKE_JOBS: 16
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.3.2 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.2/bin/ruby
CPU: 16-core 64-bit kabylake
Clang: 15.0.0 build 1500
Git: 2.45.2 => /usr/local/bin/git
Curl: 8.6.0 => /usr/bin/curl
macOS: 14.5-x86_64
CLT: 15.3.0.0.1.1708646388
Xcode: 15.4

Output of brew tap

15:31 $ brew tap
azure/kubelogin
homebrew/cask
homebrew/core
homebrew/services
int128/kubelogin
iveney/mocha
mongodb/brew
peter/local-tap

[bevanjkay]

See comment here - #173201 (comment)

[OldManLink]

Thanks for the explanation. a simple brew uninstall tcl was enough to fix the problem.