[System Test]: Rebalance failed with mover_crashed

Rebalance exited with reason {mover_crashed, {unexpected_exit, {'EXIT',<0.3419.999>, {{bulk_set_vbucket_state_failed, [{'ns_1@172.23.96.223', {'EXIT', {{{{{child_interrupted, {'EXIT',<23005.14182.674>, socket_closed}}, [{dcp_replicator,spawn_and_wait,1, [{file,"src/dcp_replicator.erl"}, {line,249}]}, {dcp_replicator,handle_call,3, [{file,"src/dcp_replicator.erl"}, {line,121}]}, {gen_server,try_handle_call,4, [{file,"gen_server.erl"}, {line,636}]}, {gen_server,handle_msg,6, [{file,"gen_server.erl"}, {line,665}]}, {proc_lib,init_p_do_apply,3, [{file,"proc_lib.erl"}, {line,247}]}]}, {gen_server,call, [<23005.14540.674>, {setup_replication, [206,289,299,300,320,321,635,906]}, infinity]}}, {gen_server,call, ['replication_manager-ORDERS', {change_vbucket_replication,635, 'ns_1@172.23.96.215'}, infinity]}}, {gen_server,call, [{'janitor_agent-ORDERS', 'ns_1@172.23.96.223'}, {if_rebalance,<0.5282.996>, {update_vbucket_state,635,pending, passive,'ns_1@172.23.96.215'}}, infinity]}}}}]}, [{janitor_agent,bulk_set_vbucket_state,4, [{file,"src/janitor_agent.erl"}, {line,400}]}, {proc_lib,init_p,3, [{file,"proc_lib.erl"},{line,232}]}]}}}} hide ns_orchestrator 000ns_1@172.23.104.113 7:13:08 AM   Thu Jan 10, 2019