Error: cannot load such file -- regexp_parser

[toobuntu]

Output of brew config

n/a: CI

Run Homebrew/actions/setup-homebrew@master
  with:
    core: true
    cask: false
    test-bot: false
    debug: false
    brew-gh-api-token: ***
    stable: false
  env:
    HOMEBREW_DEVELOPER: 1
    HOMEBREW_NO_AUTO_UPDATE: 1
    HOMEBREW_NO_ENV_HINTS: 1

Output of brew doctor

n/a: CI

Description of issue

Reporting as requested after a GitHub Actions workflow failed. It seems to be a known issue, though not sure why it's happening here in CI.

Run brew install actionlint shellcheck
==> Downloading https://ghcr.io/v2/homebrew/core/actionlint/manifests/1.7.5
==> Fetching dependencies for actionlint: shellcheck
==> Downloading https://ghcr.io/v2/homebrew/core/shellcheck/manifests/0.10.0
==> Fetching shellcheck
==> Downloading https://ghcr.io/v2/homebrew/core/shellcheck/blobs/sha256:6d0867f144686a5caa025cb15ecac49286654b78e7b89979a54eedc9a0cc9b6b
==> Fetching actionlint
==> Downloading https://ghcr.io/v2/homebrew/core/actionlint/blobs/sha256:efd9318b83817d5e2817c1fc883ac494e49d023e6335373c2248600253109445
==> Downloading https://ghcr.io/v2/homebrew/core/shellcheck/manifests/0.10.0
Already downloaded: /home/linuxbrew/.cache/Homebrew/downloads/939bfe6f0c1f854f0f44eb595c468ce80fe4741964900f4a22292a34eb148723--shellcheck-0.10.0.bottle_manifest.json
==> Installing dependencies for actionlint: shellcheck
==> Installing actionlint dependency: shellcheck
==> Downloading https://ghcr.io/v2/homebrew/core/shellcheck/manifests/0.10.0
Already downloaded: /home/linuxbrew/.cache/Homebrew/downloads/939bfe6f0c1f854f0f44eb595c468ce80fe4741964900f4a22292a34eb148723--shellcheck-0.10.0.bottle_manifest.json
==> Pouring shellcheck--0.10.0.x86_64_linux.bottle.tar.gz
Error: cannot load such file -- regexp_parser
Warning: Removed Sorbet lines from backtrace!
<internal:/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.6/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
<internal:/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.6/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.3.0/gems/json_schemer-2.3.0/lib/json_schemer.rb:12:in `<top (required)>'
<internal:/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.6/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
<internal:/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.3.6/lib/ruby/3.3.0/rubygems/core_ext/kernel_require.rb>:37:in `require'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/extend/kernel.rb:11:in `require?'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/sbom.rb:90:in `schema_validation_errors'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/sbom.rb:104:in `valid?'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/sbom.rb:121:in `write'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:900:in `finish'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:821:in `install_dependency'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:737:in `block in install_dependencies'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:737:in `each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:737:in `install_dependencies'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:463:in `install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/upgrade.rb:213:in `install_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/install.rb:361:in `install_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/install.rb:313:in `block in install_formulae'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/install.rb:312:in `each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/install.rb:312:in `install_formulae'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/install.rb:301:in `run'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:94:in `<main>'
Please report this issue:
  https://docs.brew.sh/Troubleshooting
Error: Process completed with exit code 1.

Relevant snippet of the workflow file:

workflow_syntax:
    if: github.repository_owner == 'PikachuEXE'
    runs-on: ubuntu-latest
    container:
      # https://github.com/Homebrew/brew/pkgs/container/ubuntu24.04
      image: ghcr.io/homebrew/ubuntu24.04:latest
    steps:
      - name: Set up Homebrew
        id: setup-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: true
          cask: false
          test-bot: false
      - name: Set up actionlint
        shell: bash
        env:
          HOMEBREW_TAP_REPOSITORY: ${{ steps.setup-homebrew.outputs.repository-path }}
        run: |
          brew install actionlint shellcheck