Flaky spec: spec/features/projects/work_items/work_item_spec.rb Couldn't find User with 'id'=

<!--- This issue template is for a master pipeline is failing for a flaky reason that cannot be reliably reproduced. Please read the below documentations for a workflow of triaging and resolving broken master. - https://about.gitlab.com/handbook/engineering/workflow/#triage-broken-master - https://gitlab.com/gitlab-org/quality/engineering-productivity/team/-/blob/main/runbooks/master-broken.md - https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/development/testing_guide/flaky_tests.md ---> ### Summary Incidents: - https://gitlab.com/gitlab-org/quality/engineering-productivity/master-broken-incidents/-/issues/2862 - https://gitlab.com/gitlab-org/quality/engineering-productivity/master-broken-incidents/-/issues/2883 The entire spec has been quarantined via: https://gitlab.com/gitlab-org/quality/engineering-productivity/fast-quarantine/-/merge_requests/14 ### Steps to reproduce <!-- If the pipeline failure is reproducible, provide steps to recreate the issue locally. Please use an ordered list. --> I find this error hard to reproduce locally. My suspicion is that the failures are related to test data leaking state as a result of using `let_it_be` to create test data for specs that are mutating data. See https://docs.gitlab.com/ee/development/testing_guide/flaky_tests.html#state-leak. My recommendation for resolving is to rewrite the specs by removing all `let_it_be`, and switch to `let!` or `let` which yields a more predictable test state after each spec. Please refer to [Flaky tests documentation](https://docs.gitlab.com/ee/development/testing_guide/flaky_tests.html) to learn more about how to reproduce them. ### Proposed Resolution <!-- Describe the proposed change to restore master stability. --> Please refer to the [Resolution guidance](https://about.gitlab.com/handbook/engineering/workflow/#resolution-of-broken-master) to learn more about resolution of broken master. Once the flaky failure has been fixed on the default branch, open merge requests to cherry-pick the fix to the active stable branches. ### Logs ```ruby Work item for signed in user shows project issues link in breadcrumbs Failure/Error: project.add_developer(user) ActiveRecord::RecordNotFound: Couldn't find User with 'id'=337 # ./spec/features/projects/work_items/work_item_spec.rb:19:in `block (3 levels) in <top (required)>' # ./spec/spec_helper.rb:444:in `block (3 levels) in <top (required)>' # ./spec/support/sidekiq_middleware.rb:18:in `with_sidekiq_server_middleware' # ./spec/spec_helper.rb:435:in `block (2 levels) in <top (required)>' # ./spec/spec_helper.rb:431:in `block (3 levels) in <top (required)>' # ./lib/gitlab/application_context.rb:61:in `with_raw_context' # ./spec/spec_helper.rb:431:in `block (2 levels) in <top (required)>' # ./spec/spec_helper.rb:268:in `block (2 levels) in <top (required)>' # ./spec/support/system_exit_detected.rb:7:in `block (2 levels) in <top (required)>' # ./spec/support/fast_quarantine.rb:23:in `block (2 levels) in <top (required)>' # ./spec/support/database/prevent_cross_joins.rb:106:in `block (3 levels) in <top (required)>' # ./spec/support/database/prevent_cross_joins.rb:60:in `with_cross_joins_prevented' # ./spec/support/database/prevent_cross_joins.rb:106:in `block (2 levels) in <top (required)>' ... Failed examples: rspec ./spec/features/projects/work_items/work_item_spec.rb:26 # Work item for signed in user shows project issues link in breadcrumbs rspec ./spec/features/projects/work_items/work_item_spec.rb:32 # Work item for signed in user uses IID path in breadcrumbs rspec ./spec/features/projects/work_items/work_item_spec.rb:38 # Work item for signed in user actions dropdown is displayed rspec ./spec/features/projects/work_items/work_item_spec.rb:42 # Work item for signed in user behaves like work items title successfully shows and changes the title of the work item rspec ./spec/features/projects/work_items/work_item_spec.rb:43 # Work item for signed in user behaves like work items status successfully shows and changes the status of the work item rspec ./spec/features/projects/work_items/work_item_spec.rb:45 # Work item for signed in user behaves like work items labels successfully assigns a label rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:1]' # Work item for signed in user behaves like work items comments successfully creates and shows comments rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:2]' # Work item for signed in user behaves like work items comments successfully updates existing comments rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:4]' # Work item for signed in user behaves like work items comments successfully posts comments using shortcut and checks if textarea is blank when reinitiated rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:3:1]' # Work item for signed in user behaves like work items comments for work item note actions signed in user with developer role shows work item note actions rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:5:1]' # Work item for signed in user behaves like work items comments when using quick actions autocompletes quick actions common to all work item types rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:5:2:1]' # Work item for signed in user behaves like work items comments when using quick actions when a widget is enabled autocompletes quick action for the enabled widget rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:8:5:3:1]' # Work item for signed in user behaves like work items comments when using quick actions when a widget is disabled does not autocomplete quick action for the disabled widget rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:9:1]' # Work item for signed in user behaves like work items description shows GFM autocomplete rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:9:2]' # Work item for signed in user behaves like work items description autocompletes available quick actions rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:9:3:1]' # Work item for signed in user behaves like work items description on conflict shows conflict message when description changes rspec ./spec/features/projects/work_items/work_item_spec.rb:48 # Work item for signed in user behaves like work items milestone searches and sets or removes milestone for the work item rspec ./spec/features/projects/work_items/work_item_spec.rb:49 # Work item for signed in user behaves like work items notifications displays toast when notification is toggled rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:12:1]' # Work item for signed in user behaves like work items todos adds item to the list rspec './spec/features/projects/work_items/work_item_spec.rb[1:1:12:2]' # Work item for signed in user behaves like work items todos marks a todo as done ```

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