Issue #17220 has been updated by naruse (Yui NARUSE).


sawa (Tsuyoshi Sawada) wrote in #note-10:
> I don't get it. If this is a Ruby's bug, then why does this issue only/mainly describe a Rails' error? Even the issue title is about Rails. If a Ruby's bug was found while checking Rails CI, then the latter could be mentioned as a side note, but still, the bug itself could be narrowed down and extracted without mentioning Rails.

> I don't get it. If this is a Ruby's bug, then why does this issue only/mainly describe a Rails' error? Even the issue title is about Rails. If a Ruby's bug was found while checking Rails CI, then the latter could be mentioned as a side note, but still, the bug itself could be narrowed down and extracted without mentioning Rails.

We are practical.
In this case yahonda report this ticket, and eugeneius identify the small reproducible code.
Now it's clear that Ruby has an issue.
What is a problem?

You dogmatic attitude doesn't contribute anything.
Contribution is welcome.
What is a contribution is decided by whether it contributes something or not.

----------------------------------------
Bug #17220: Rails Active Job integration test fails with Ruby 3.0.0 since 2038cc6cab6ceeffef3ec3a765c70ae684f829ed
https://bugs.ruby-lang.org/issues/17220#change-88714

* Author: yahonda (Yasuo Honda)
* Status: Assigned
* Priority: Normal
* Assignee: Glass_saga (Masaki Matsushita)
* Target version: 3.0
* ruby -v: ruby 2.8.0dev (2020-08-27T07:39:13Z v3_0_0_preview1~397 2038cc6cab) [x86_64-linux]
* Backport: 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED
----------------------------------------
One of the Rails CI, Active Job integration test with sidekiq, against Ruby 3.0.0 has been failing since August 30, 2020.

According to `git bisect` is is triggered by 2038cc6cab6ceeffef3ec3a765c70ae684f829ed . Somehow this issue only reproduces with Ruby on Docker like `rubylang/ruby:master-nightly-bionic`
It does not reproduce if Ruby is installed locally using `rbenv install 3.0.0-dev` on Ubuntu 20.04 and macOS 11 beta.

### The first failed build job

https://buildkite.com/rails/rails/builds/71321#84b29655-b3df-4b5c-8b20-cbf15ecd9653

``` ruby
Ruby          2.8.0p-1 (2020-08-29 revision d7492a0be885ea9f2b9f71e3e95582f9a859c439) [x86_64-linux]

```

### The last successful build job
https://buildkite.com/rails/rails/builds/71143#369217f7-95f6-4ab9-8ef5-7c6364bd803e

```ruby
Ruby          2.8.0p-1 (2020-08-20 revision a74df67244199d1fd1f7a20b49dd5a096d2a13a2) [x86_64-linux]
```

### `git bisect` result

Performed `git bisect` ruby/ruby repository and it says `2038cc6cab6ceeffef3ec3a765c70ae684f829ed` triggers this build failure.

## Steps to reproduce

1. Install Docker
2. Install Ruby 2.7.1 (or whatever Ruby version to run rake)
3. Create Ruby docker image for 2038cc6cab6ceeffef3ec3a765c70ae684f829ed

```
git clone https://github.com/ruby/ruby-docker-images.git
cd ruby-docker-images
rake docker:build ruby_version=master:2038cc6cab6ceeffef3ec3a765c70ae684f829ed
```

4. Run Rails CI using the Docker image created in step 3

```
cd ~
git clone https://github.com/rails/rails.git
cd rails
git clone https://github.com/rails/buildkite-config .buildkite/
RUBY_IMAGE=rubylang/ruby:master-2038cc6cab6ceeffef3ec3a765c70ae684f829ed-bionic docker-compose -f .buildkite/docker-compose.yml build base && CI=1 docker-compose -f .buildkite/docker-compose.yml run default runner activejob 'AJ_ADAPTER=sidekiq AJ_INTEGRATION_TESTS=true bin/test test/integration/queuing_test.rb --seed 5170'
```

## Actual result

```
Using sidekiq
Run options: --seed 5170

# Running:

.SSSF

Failure:
QueuingTest#test_should_run_job_enqueued_in_the_future_at_the_specified_time [/rails/activejob/test/integration/queuing_test.rb:76]:
Expected false to be truthy.


bin/test test/integration/queuing_test.rb:71

.F

Failure:
QueuingTest#test_should_run_jobs_enqueued_on_a_listening_queue [/rails/activejob/test/integration/queuing_test.rb:14]:
Expected false to be truthy.


bin/test test/integration/queuing_test.rb:11

.SS..F

Failure:
QueuingTest#test_current_locale_is_kept_while_running_perform_later [/rails/activejob/test/integration/queuing_test.rb:102]:
Expected false to be truthy.


bin/test test/integration/queuing_test.rb:93

F

Failure:
QueuingTest#test_current_timezone_is_kept_while_running_perform_later [/rails/activejob/test/integration/queuing_test.rb:119]:
Expected false to be truthy.


bin/test test/integration/queuing_test.rb:110

..

Finished in 34.153644s, 0.4392 runs/s, 0.3514 assertions/s.
15 runs, 12 assertions, 4 failures, 0 errors, 5 skips

You have skipped tests. Run with --verbose for details.
```


## Expected result

It should success as the Ruby as of the previous commit `1035a3b202ee86bf2b0a1d00eefcfff0d7ab9f6b` does.

```
$ RUBY_IMAGE=rubylang/ruby:master-1035a3b202ee86bf2b0a1d00eefcfff0d7ab9f6b-bionic docker-compose -f .buildkite/docker-compose.yml build base && CI=1 docker-compose -f .buildkite/docker-compose.yml run default runner activejob 'AJ_ADAPTER=sidekiq AJ_INTEGRATION_TESTS=true bin/test test/integration/queuing_test.rb --seed 5170'
```

```
+++
+++ activejob: AJ_ADAPTER=sidekiq AJ_INTEGRATION_TESTS=true bin/test test/integration/queuing_test.rb --seed 5170
Using sidekiq
Run options: --seed 5170

# Running:

.SSS....SS.....

Finished in 13.647623s, 1.0991 runs/s, 1.0258 assertions/s.
15 runs, 14 assertions, 0 failures, 0 errors, 5 skips

You have skipped tests. Run with --verbose for details.
```




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