ActiveRecord::RecordInvalid: Validation failed: Friend has already been taken

[dwilkie]

Check full details on Airbrake: #1347479281950773896

Backtrace:

[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/validations.rb:79:in raise_record_invalid
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/validations.rb:43:in save!
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/attribute_methods/dirty.rb:29:in save!
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:291:in block in save!
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:347:in block in with_transaction_returning_status
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in block in transaction
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/transaction.rb:188:in within_new_transaction
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in transaction
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:220:in transaction
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:344:in with_transaction_returning_status
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/transactions.rb:291:in save!
[PROJECT_ROOT]/app/models/chat.rb:108:in activate!
[PROJECT_ROOT]/app/models/chat.rb:215:in initialize_and_activate_for_friend!
[PROJECT_ROOT]/app/models/chat.rb:63:in block in activate_multiple!
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/relation/delegation.rb:46:in each
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.0/lib/active_record/relation/delegation.rb:46:in each
[PROJECT_ROOT]/app/models/chat.rb:62:in activate_multiple!
[PROJECT_ROOT]/app/models/chat.rb:141:in block in deactivate!
[PROJECT_ROOT]/app/models/chat.rb:140:in each
[PROJECT_ROOT]/app/models/chat.rb:140:in deactivate!
[PROJECT_ROOT]/app/jobs/chat_deactivator_job.rb:5:in perform
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/execution.rb:32:in block in perform_now
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:117:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:117:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:338:in block (2 levels) in simple
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:23:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:23:in block (4 levels) in <module:Logging>
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/notifications.rb:164:in block in instrument
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/notifications/instrumenter.rb:20:in instrument
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/notifications.rb:164:in instrument
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:22:in block (3 levels) in <module:Logging>
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:43:in block in tag_logger
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/tagged_logging.rb:68:in block in tagged
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/tagged_logging.rb:26:in tagged
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/tagged_logging.rb:68:in tagged
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:43:in tag_logger
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/logging.rb:19:in block (2 levels) in <module:Logging>
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:436:in instance_exec
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:436:in block in make_lambda
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:337:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:337:in block in simple
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:92:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:92:in _run_callbacks
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:734:in _run_perform_callbacks
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb:81:in run_callbacks
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/execution.rb:31:in perform_now
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/execution.rb:21:in execute
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/activejob-4.2.0/lib/active_job/queue_adapters/sidekiq_adapter.rb:40:in perform
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/processor.rb:75:in execute_job
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/processor.rb:52:in block (2 levels) in process
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:127:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:127:in block in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/server/active_record.rb:6:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:129:in block in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/server/retry_jobs.rb:74:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:129:in block in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/server/logging.rb:11:in block in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/logging.rb:24:in with_context
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/server/logging.rb:7:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:129:in block in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:132:in call
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/middleware/chain.rb:132:in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/processor.rb:51:in block in process
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/processor.rb:98:in stats
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/sidekiq-3.3.1/lib/sidekiq/processor.rb:50:in process
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:26:in public_send
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:26:in dispatch
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/calls.rb:122:in dispatch
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/cell.rb:60:in block in invoke
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/cell.rb:71:in block in task
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/actor.rb:357:in block in task
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/tasks.rb:57:in block in initialize
[PROJECT_ROOT]/vendor/bundle/ruby/2.2.0/gems/celluloid-0.16.0/lib/celluloid/tasks/task_fiber.rb:15:in block in create