Circular dependency detected while autoloading constant Gitlab::PushDataBuilder

After upgrade from 6.7.2 to 7.14, git push does upload commits, but on dashboard is activity not updated.
In sidekiq.log:

2015-09-18T10:28:59.170Z 7527 TID-or724n4qs WARN: {"class"=>"PostReceive", "args"=>["/home/git/repositories/justinc/jc-test.git", "key-310", "ODhh...yCg==\n"]}
2015-09-18T10:28:59.170Z 7527 TID-or724n4qs WARN: Circular dependency detected while autoloading constant Gitlab::PushDataBuilder
2015-09-18T10:28:59.170Z 7527 TID-or724n4qs WARN: /home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.11/lib/active_support/dependencies.rb:478:in `load_missing_constant'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/activesupport-4.1.11/lib/active_support/dependencies.rb:180:in `const_missing'
/home/git/gitlab/app/services/git_push_service.rb:114:in `build_push_data'
/home/git/gitlab/app/services/git_push_service.rb:58:in `execute'
/home/git/gitlab/app/workers/post_receive.rb:41:in `block in perform'
/home/git/gitlab/app/workers/post_receive.rb:28:in `each'
/home/git/gitlab/app/workers/post_receive.rb:28:in `perform'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/processor.rb:75:in `execute_job'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/processor.rb:52:in `block (2 levels) in process'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:127:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:127:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidetiq-0.6.3/lib/sidetiq/middleware/history.rb:8:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/server/active_record.rb:6:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/logging.rb:22:in `with_context'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/server/logging.rb:7:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:132:in `call'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/middleware/chain.rb:132:in `invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/processor.rb:51:in `block in process'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/processor.rb:98:in `stats'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/sidekiq-3.3.0/lib/sidekiq/processor.rb:50:in `process'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:26:in `public_send'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:26:in `dispatch'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:122:in `dispatch'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/cell.rb:60:in `block in invoke'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/cell.rb:71:in `block in task'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/actor.rb:357:in `block in task'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/tasks.rb:57:in `block in initialize'
/home/git/gitlab/vendor/bundle/ruby/2.1.0/gems/celluloid-0.16.0/lib/celluloid/tasks/task_fiber.rb:15:in `block in create'

Upgrade was done following https://github.com/gitlabhq/gitlabhq/blob/master/doc/update/6.x-or-7.x-to-7.14.md , only config files were updated to reflect local deploy. What should I look at next to fix issue?

I did run (before pushing to test repo)
sudo -u git -H ./bin/create-hooks
and restarted gitlab. Afterwards, the error above was shown. After some time, it was ‘magically’ resolved - nothing really done from my side. Look as just a temporal glitch.