brew test fails with Invalid cross-device link #20114
Description
brew doctor output
--Verification
- My "
brew doctoroutput" above saysYour system is ready to brew.and am still able to reproduce my issue. - I ran
brew updatetwice and am still able to reproduce my issue. - This issue's title and/or description do not reference a single formula e.g.
brew install wget. If they do, open an issue at https://github.com/Homebrew/homebrew-core/issues/new/choose instead.
brew config output
--What were you trying to do (and why)?
Test my fixes for PR.
➜ ~ brew tests --changed
What happened (include all command output)?
Introduced by e9f55a8.
➜ ~ brew tests --changed
Randomized with seed 17175
1 process for 1 spec, ~ 1 spec per process
FFFFF
Failures:
1) Homebrew::FormulaCreator gets name from generic tarball URL
Failure/Error: File.link s, d
Errno::EXDEV:
Invalid cross-device link @ rb_file_s_link - (/home/anatoli/.cache/Homebrew/api/cask.jws.json, /var/tmp/homebrew-tests-20250615-121104-8zhyso/cache/api/cask.jws.json)
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/fileutils.rb:522:in 'File.link'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/fileutils.rb:522:in 'block in FileUtils.ln'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/fileutils.rb:2487:in 'FileUtils.fu_each_src_dest0'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/lib/ruby/3.4.0/fileutils.rb:520:in 'FileUtils.ln'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/test/spec_helper.rb:255:in 'block (3 levels) in <top (required)>'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/test/spec_helper.rb:254:in 'Array#each'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/test/spec_helper.rb:254:in 'block (2 levels) in <top (required)>'
# /home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/vendor/bundle/ruby/3.4.0/gems/rspec-core-3.13.3/lib/rspec/core/example.rb:457:in 'BasicObject#instance_exec'
...https://ruby-doc.org/core-2.5.5/File.html#method-c-link creates hardlink, and on Linux, the /tmp dir uses memory based tmpfs, so hardlinking fails.
What did you expect to happen?
Use symbolic link instead?
Step-by-step reproduction instructions (by running brew commands)
--