brew test-bot --fail-fast --only-setup on Linux broken for ~2 days due to sandbox

[ReenigneArcher]

Looking for the official guidance on this, as it worked perfectly fine until about 2 days ago.

As far as I understand the brew workflows are supposed to setup everything needed for the taps? I did not see any adjustments to the template workflows in Homebrew/brew@378658d though I may have missed it.

==> Using Homebrew/brew 5.1.13-51-gedba4d96f3 (Merge pull request #22402 from Homebrew/sponsors-maintainers-man-completions)
==> Testing LizardByte/homebrew-homebrew 304f058 (Merge 5ab8646eea7506dea077f105d134043f211f9e78 into 65ae2310ca87baf5d79262f8d4052852be03b361):

==> Running Setup#run!
==> brew install-bundler-gems --add-groups=ast,audit,bottle,formula_test,livecheck,style
==> brew config
HOMEBREW_VERSION: 5.1.13-51-gedba4d9
ORIGIN: https://github.com/Homebrew/brew
HEAD: edba4d96f30b6b63656cb016bd716cd4343cc890
Last commit: 2 hours ago
Branch: main
Core tap JSON: 24 May 06:08 UTC
HOMEBREW_PREFIX: /home/linuxbrew/.linuxbrew
HOMEBREW_ASK: set
HOMEBREW_CACHE: /home/runner/.cache/Homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_CLEANUP_PERIODIC_FULL_DAYS: 3650
HOMEBREW_COLOR: set
HOMEBREW_CURL_PATH: /usr/bin/curl
HOMEBREW_DEVELOPER: set
HOMEBREW_DOWNLOAD_CONCURRENCY: 8
HOMEBREW_FAIL_LOG_LINES: 150
HOMEBREW_GITHUB_API_TOKEN: set
HOMEBREW_GIT_EMAIL: 1589480+BrewTestBot@users.noreply.github.com
HOMEBREW_GIT_NAME: BrewTestBot
HOMEBREW_GIT_PATH: /usr/bin/git
HOMEBREW_LOGS: /home/runner/work/homebrew-homebrew/homebrew-homebrew/logs
HOMEBREW_MAKE_JOBS: 4
HOMEBREW_NO_AUTO_UPDATE: set
HOMEBREW_NO_EMOJI: set
HOMEBREW_NO_ENV_HINTS: set
HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: set
HOMEBREW_SANDBOX_LINUX: set
HOMEBREW_SBOM: set
HOMEBREW_SORBET_RUNTIME: set
HOMEBREW_UPDATE_TO_TAG: set
HOMEBREW_UPGRADE_AUTO_UPDATES_CASKS: set
HOMEBREW_USE_INTERNAL_API: set
Homebrew Ruby: 4.0.5 => /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/4.0.5/bin/ruby
CPU: quad-core 64-bit zen3
Clang: 18.1.3
Git: 2.54.0 => /usr/bin/git
Curl: 8.5.0 => /usr/bin/curl
Kernel: Linux 6.17.0-1013-azure x86_64 GNU/Linux
OS: Ubuntu 24.04.4 LTS (noble)
Host glibc: 2.39
Host libstdc++: 6.0.33
/usr/bin/gcc-12: 12.4.0
/usr/bin/ruby: 3.2.3
glibc: N/A
gcc@12: N/A
gcc: N/A
xorg: N/A
==> brew doctor
==> FAILED
Full doctor output
  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: Bubblewrap is required to use the Linux sandbox but was not found.
  
  Install Bubblewrap and ensure a rootless `bwrap` executable is available on `PATH`.
  
  As a final workaround, disable the Linux sandbox:
    export HOMEBREW_NO_SANDBOX_LINUX=1
  
Error: Process completed with exit code 1.

My tap: https://github.com/LizardByte/homebrew-homebrew

[ReenigneArcher]

Can't say it's the correct approach, but this is what I'm doing as a workaround.

LizardByte/homebrew-homebrew#274