testmycode / testmycode/tmc-server
ArgumentError: string contains null byte when saving submission results
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Description
I've seen these a few time in the logs recently: ArgumentError: string contains null byte
4.2.6/lib/active_record/associations/collection_proxy.rb:970:in `<<'
/home/tmc/srv/hy/lib/test_run_grader.rb:63:in `block in create_test_case_runs'
/home/tmc/srv/hy/lib/test_run_grader.rb:53:in `each'
/home/tmc/srv/hy/lib/test_run_grader.rb:53:in `create_test_case_runs'
/home/tmc/srv/hy/lib/test_run_grader.rb:30:in `grade_results'
/home/tmc/srv/hy/lib/sandbox_results_saver.rb:48:in `block in save_results'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
ArgumentError
string contains null byte
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:602:in `exec_prepared'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:602:in`block in exec_cache'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:472:in `block in log'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/notifications/instrumenter.rb:20:in`instrument'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract_adapter.rb:466:in `log'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:601:in`exec_cache'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:585:in `execute_and_clear'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:160:in`exec_query'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql/database_statements.rb:192:in `exec_insert'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:108:in`insert'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/query_cache.rb:14:in `insert'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/relation.rb:64:in`insert'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/persistence.rb:524:in `_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/counter_cache.rb:139:in`_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/locking/optimistic.rb:75:in `_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/attribute_methods/dirty.rb:133:in`_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/callbacks.rb:306:in `block in _create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:88:in`__run_callbacks__'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:778:in `_run_create_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/callbacks.rb:306:in`_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/timestamp.rb:57:in `_create_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/persistence.rb:504:in`create_or_update'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/callbacks.rb:302:in `block in create_or_update'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:117:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:117:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:555:in`block (2 levels) in compile'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:505:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:505:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:778:in `_run_save_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/callbacks.rb:302:in`create_or_update'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/persistence.rb:120:in `save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/validations.rb:37:in`save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/attribute_methods/dirty.rb:21:in `save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:286:in`block (2 levels) in save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:351:in `block in with_transaction_returning_status'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:211:in`transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:220:in `transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:348:in`with_transaction_returning_status'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:286:in `block in save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:301:in`rollback_active_record_state!'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:285:in `save'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/active_record_helper.rb:26:in`block in save'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/transaction.rb:848:in `with_database_metric_name'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent.rb:572:in`with_database_metric_name'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/active_record_helper.rb:25:in `save'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/has_many_association.rb:41:in`insert_record'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:563:in `block (2 levels) in concat_records'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:408:in`replace_on_target'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:403:in `add_to_target'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:562:in`block in concat_records'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:560:in `each'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:560:in`concat_records'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/has_many_association.rb:180:in `concat_records'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:168:in`block in concat'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:183:in `block in transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:211:in`transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:220:in `transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:182:in`transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_association.rb:168:in `concat'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/associations/collection_proxy.rb:970:in`<<'
/home/tmc/srv/hy/lib/test_run_grader.rb:63:in `block in create_test_case_runs'
/home/tmc/srv/hy/lib/test_run_grader.rb:53:in`each'
/home/tmc/srv/hy/lib/test_run_grader.rb:53:in `create_test_case_runs'
/home/tmc/srv/hy/lib/test_run_grader.rb:30:in`grade_results'
/home/tmc/srv/hy/lib/sandbox_results_saver.rb:48:in `block in save_results'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in`block in transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/transaction.rb:184:in `within_new_transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in`transaction'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/transactions.rb:220:in `transaction'
/home/tmc/srv/hy/lib/sandbox_results_saver.rb:8:in`save_results'
/home/tmc/srv/hy/app/controllers/results_controller.rb:17:in `create'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal/implicit_render.rb:4:in`send_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/abstract_controller/base.rb:198:in `process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal/rendering.rb:10:in`process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:117:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:117:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:555:in`block (2 levels) in compile'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:505:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:505:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:778:in`_run_process_action_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:81:in `run_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/abstract_controller/callbacks.rb:19:in`process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal/rescue.rb:29:in `process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/logstasher-0.9.0/lib/logstasher/rails_ext/action_controller/metal/instrumentation.rb:34:in`block in process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/notifications.rb:164:in `block in instrument'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/notifications/instrumenter.rb:20:in`instrument'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/notifications.rb:164:in `instrument'
/usr/local/rvm/gems/ruby-2.2.1/gems/logstasher-0.9.0/lib/logstasher/rails_ext/action_controller/metal/instrumentation.rb:21:in`process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/railties/controller_runtime.rb:18:in`process_action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/abstract_controller/base.rb:137:in `process'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionview-4.2.6/lib/action_view/rendering.rb:30:in`process'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal.rb:196:in `dispatch'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal/rack_delegation.rb:13:in`dispatch'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_controller/metal.rb:237:in `block in action'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/routing/route_set.rb:74:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/routing/route_set.rb:43:in`serve'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/journey/router.rb:43:in `block in serve'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/journey/router.rb:30:in`each'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/journey/router.rb:30:in `serve'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/routing/route_set.rb:817:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/rack/agent_hooks.rb:30:in`traced_call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/rack/browser_monitoring.rb:32:in`traced_call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/etag.rb:24:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/conditionalget.rb:38:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/head.rb:13:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/params_parser.rb:27:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/flash.rb:260:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:225:in`context'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/session/abstract/id.rb:220:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/cookies.rb:560:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/query_cache.rb:36:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activerecord-4.2.6/lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:88:in`__run_callbacks__'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/callbacks.rb:81:in`run_callbacks'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/rack/logger.rb:38:in `call_app'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/rack/logger.rb:20:in`block in call'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:26:in`tagged'
/usr/local/rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/tagged_logging.rb:68:in `tagged'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/rack/logger.rb:20:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/request_store-1.3.0/lib/request_store/middleware.rb:9:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/actionpack-4.2.6/lib/action_dispatch/middleware/request_id.rb:21:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/methodoverride.rb:22:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-1.6.4/lib/rack/runtime.rb:18:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
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/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/rack-cors-0.4.0/lib/rack/cors.rb:80:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/newrelic_rpm-3.15.1.316/lib/new_relic/agent/instrumentation/middleware_tracing.rb:96:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/engine.rb:518:in`call'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/application.rb:165:in `call'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/railtie.rb:194:in`public_send'
/usr/local/rvm/gems/ruby-2.2.1/gems/railties-4.2.6/lib/rails/railtie.rb:194:in `method_missing'
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/usr/local/rvm/gems/ruby-2.2.1/gems/passenger-5.0.26/src/ruby_supportlib/phusion_passenger/rack/thread_handler_extension.rb:97:in `process_request'
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/usr/local/rvm/gems/ruby-2.2.1/gems/passenger-5.0.26/src/ruby_supportlib/phusion_passenger/utils.rb:113:in `block in create_thread_and_abort_on_exception'
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing lib/test_run_grader.rb, especially create_test_case_runs, through lib/sandbox_results_saver.rb and app/controllers/results_controller.rb. Reproduce a submission result containing a null byte and identify which value reaches PostgreSQL through ActiveRecord. Done means the failing save path is understood and no longer raises this error, with the relevant behavior verified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- postgresql, rails, ruby
- Domain
- backend, databases
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100