Unexpected method 'discontinued' called during caveats on Cask spectacle

[williamlsh]

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

Can't uninstall spectacle cask.

Command that failed

brew uninstall -f --zap --cask spectacle

Output of command with --verbose --debug

Error: Unexpected method 'discontinued' called during caveats on Cask spectacle.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs

Output of brew doctor and brew config

Error: Unexpected method 'discontinued' called during caveats on Cask spectacle.
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs

HOMEBREW_VERSION: 5.0.6
ORIGIN: https://github.com/Homebrew/brew
HEAD: d28a8210ba87786bd2553a1d1d410c40ebd18c9f
Last commit: 5 days ago
Branch: stable
Core tap JSON: 21 Dec 01:42 UTC
Core cask tap JSON: 21 Dec 01:42 UTC
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_DOWNLOAD_CONCURRENCY: 16
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 3.4.7 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.7/bin/ruby
CPU: octa-core 64-bit kabylake
Clang: 17.0.0 build 1700
Git: 2.50.1 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.7.3-x86_64
CLT: 26.2.0.0.1.1764812424
Xcode: N/A

Output of brew tap

No output from this command.