Large fulltext upload error

Looks like an error when trying to save JSON results:

PG::ProgramLimitExceeded: ERROR: out of memory DETAIL: Cannot enlarge string buffer containing 0 bytes by 1689170473 more bytes. : UPDATE "fulltext_ingests" SET "finished_at" = $1, "results" = $2, "updated_at" = $3 WHERE "fulltext_ingests"."id" = $4

/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/postgresql_adapter.rb:602:in `exec_prepared'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/postgresql_adapter.rb:602:in `block in exec_cache'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract_adapter.rb:484:in `block in log'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract_adapter.rb:478:in `log'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/postgresql_adapter.rb:601:in `exec_cache'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/postgresql_adapter.rb:585:in `execute_and_clear'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/postgresql/database_statements.rb:173:in `exec_delete'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract/database_statements.rb:114:in `update'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract/query_cache.rb:14:in `update'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/relation.rb:88:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/persistence.rb:515:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/locking/optimistic.rb:79:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/attribute_methods/dirty.rb:129:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/callbacks.rb:310:in `block in _update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:88:in `__run_callbacks__'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:778:in `_run_update_callbacks'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/callbacks.rb:310:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/timestamp.rb:70:in `_update_record'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/persistence.rb:504:in `create_or_update'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/callbacks.rb:302:in `block in create_or_update'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:117:in `call'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:505:in `call'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.11.1/lib/active_support/callbacks.rb:778:in `_run_save_callbacks'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/callbacks.rb:302:in `create_or_update'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/persistence.rb:120:in `save'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/validations.rb:37:in `save'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/attribute_methods/dirty.rb:21:in `save'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:286:in `block (2 levels) in save'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:351:in `block in with_transaction_returning_status'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract/transaction.rb:184:in `within_new_transaction'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:220:in `transaction'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:348:in `with_transaction_returning_status'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:286:in `block in save'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:301:in `rollback_active_record_state!'
/deploy/meta/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.11.1/lib/active_record/transactions.rb:285:in `save'
/deploy/meta/app/workers/fulltext_processor.rb:78:in `perform'