Transient failure in qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb

Summary

Multiple failures in Plan Epics milestone dates API as shown in https://ops.gitlab.net/gitlab-org/quality/canary/-/jobs/1241156

Stack Trace

   1) Plan Epics milestone dates API changes epic dates when updating milestones
      Failure/Error: expect_status(201)
      
        expected: 201
             got: 400
      
        (compared using ==)
      # /usr/local/bundle/gems/airborne-0.3.4/lib/airborne/request_expectations.rb:36:in `expect_status'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:125:in `create_project'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:11:in `block (3 levels) in <module:QA>'
      # ./qa/specs/runner.rb:71:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/template.rb:33:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/bootable.rb:28:in `launch!'
   2) Plan Epics milestone dates API updates epic dates when adding another issue
      Failure/Error: expect_status(201)
      
        expected: 201
             got: 400
      
        (compared using ==)
      # /usr/local/bundle/gems/airborne-0.3.4/lib/airborne/request_expectations.rb:36:in `expect_status'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:125:in `create_project'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:11:in `block (3 levels) in <module:QA>'
      # ./qa/specs/runner.rb:71:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/template.rb:33:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/bootable.rb:28:in `launch!'
   3) Plan Epics milestone dates API updates epic dates when removing issue
      Failure/Error: expect_status(201)
      
        expected: 201
             got: 400
      
        (compared using ==)
      # /usr/local/bundle/gems/airborne-0.3.4/lib/airborne/request_expectations.rb:36:in `expect_status'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:125:in `create_project'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:11:in `block (3 levels) in <module:QA>'
      # ./qa/specs/runner.rb:71:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/template.rb:33:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/bootable.rb:28:in `launch!'
   4) Plan Epics milestone dates API updates epic dates when deleting milestones
      Failure/Error: expect_status(201)
      
        expected: 201
             got: 400
      
        (compared using ==)
      # /usr/local/bundle/gems/airborne-0.3.4/lib/airborne/request_expectations.rb:36:in `expect_status'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:125:in `create_project'
      # ./qa/specs/features/ee/api/2_plan/epics_milestone_dates_spec.rb:11:in `block (3 levels) in <module:QA>'
      # ./qa/specs/runner.rb:71:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'
      # ./qa/scenario/template.rb:8:in `tap'
      # ./qa/scenario/template.rb:8:in `perform'
      # ./qa/scenario/template.rb:33:in `perform'
      # ./qa/scenario/template.rb:10:in `block in perform'