Unexpected method 'appcast' called on Cask adoptopenjdk8.

[hz0ne]

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

❯ brew install --cask adoptopenjdk8
Error: Unexpected method 'appcast' called on Cask adoptopenjdk8.
Follow the instructions here:
https://github.com/Homebrew/homebrew-cask#reporting-bugs
==> Downloading https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u292-b10/OpenJDK8U-jdk_x64_mac_hotspot_8u292b10.pkg

brew install adoptopenjdk8 ERROR

Command that failed

yes

Output of command with --verbose --debug

❯ brew install --cask adoptopenjdk8 --verbose --debug
/opt/homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromNameLoader): loading adoptopenjdk8
Error: Unexpected method 'appcast' called on Cask adoptopenjdk8.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
==> Cask::Installer#install
==> Printing caveats
==> Cask::Installer#fetch

Output of brew doctor and brew config

❯ 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: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  [email protected]

Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae and may need to be deleted.

Unexpected dylibs:
  /usr/local/lib/libmonitor.dylib

Output of brew tap

❯ brew tap
adoptopenjdk/openjdk
laishulu/cask-fonts
zeta/zeta

[khipp]

Take a look at our pinned issue: #173201 (comment).