Bug #21531: /usr/src/ruby/vm_insnhelper.c:131: Assertion Failed: callable_method_entry_p:IMEMO_TYPE_P((VALUE)cme, imemo_ment): imemo_type:env

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 3.5.0p-1 (2025-08-02 revision fca2e6f8f53920170654e696c2585fcd3f4ebe11) [x86_64-linux]
• Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[yahonda (Yasuo Honda)]

Rails CI is consistently throwing assertion failures, but I can't replicate this behavior locally yet.

https://buildkite.com/rails/rails-nightly/builds/2619#0198676f-b98c-4c4e-a631-a101c6bb8c93

/usr/local/bin/ruby -w -I"lib:test" /usr/local/lib/ruby/gems/3.5.0+2/gems/rake-13.3.0/lib/rake/rake_test_loader.rb "test/activejob/destroy_association_async_job_test.rb" "test/activejob/destroy_association_async_test.rb" "test/activejob/job_checkpoints_test.rb" "test/activejob/job_runtime_test.rb" --profile
/usr/local/lib/ruby/gems/3.5.0+2/gems/i18n-1.14.7/lib/i18n/exceptions.rb:3: warning: CGI library is removed from Ruby 3.5. Please use cgi/escape instead for CGI.escape and CGI.unescape features.
If you need to use the full features of CGI library, Please install cgi gem.
/usr/src/ruby/vm_insnhelper.c:131: Assertion Failed: callable_method_entry_p:IMEMO_TYPE_P((VALUE)cme, imemo_ment): imemo_type:env
ruby 3.5.0dev (2025-08-01T16:00:05Z master fca2e6f8f5) +PRISM [x86_64-linux]

Environment

• Using rubylang/ruby:master-debug Docker image provided via https://hub.docker.com/r/rubylang/ruby/
• Last successful build with Ruby 3.5.0p-1 (2025-08-01 revision b3598cf2a355497693bb66097edc156af3152e9b) [x86_64-linux]
  https://buildkite.com/rails/rails-nightly/builds/2614#01986249-5d8f-4315-babf-63d9aaec4b78
• I suspect this problem was introduced by one of the commits in this range: https://github.com/ruby/ruby/compare/b3598cf2a355497693bb66097edc156af3152e9b...fca2e6f8f53920170654e696c2585fcd3f4ebe11

[byroot (Jean Boussier)]

• Status changed from Open to Closed

@jhawthorn (John Hawthorn) merged a fix for this: https://github.com/ruby/ruby/pull/14135