[4.0 CE] Node Autofailover

=========================CRASH REPORT=========================

  crasher:

    initial call: ns_ports_setup:setup_body_tramp/0

    pid: <0.324.0>

    registered_name: ns_ports_setup

    exception error: {child_ports_sup_died,<11479.69.0>,shutdown}

      in function  ns_ports_setup:children_loop_continue/3 (src/ns_ports_setup.erl, line 109)

    ancestors: [ns_server_sup,ns_server_nodes_sup,<0.153.0>,

                  ns_server_cluster_sup,<0.89.0>]

    messages: [{'$gen_call',{<0.32012.331>,#Ref<0.0.317.156725>},sync}]

    links: [<0.198.0>,<0.325.0>]

    dictionary: [{'ns_ports_setup-projector-available',

                      "/opt/couchbase/bin/projector"},

                  {'ns_ports_setup-saslauthd-port-available',

                      "/opt/couchbase/bin/saslauthd-port"},

                  {'ns_ports_setup-goxdcr-available',

                      "/opt/couchbase/bin/goxdcr"}]

    trap_exit: false

    status: running

    heap_size: 2586

    stack_size: 27

    reductions: 6007400

  neighbours:

=========================CRASH REPORT=========================

  crasher:

    initial call: compaction_new_daemon:-spawn_vbucket_compactor/5-fun-0-/0

    pid: <0.31717.331>

    registered_name: []

    exception error: no match of right hand side value {error,closed}

      in function  mc_client_binary:cmd_vocal_recv/5 (src/mc_client_binary.erl, line 156)

      in call from mc_client_binary:compact_vbucket/5 (src/mc_client_binary.erl, line 406)

      in call from ns_memcached:'-compact_vbucket/3-fun-0-'/5 (src/ns_memcached.erl, line 1490)

      in call from ns_memcached:'-perform_very_long_call/2-fun-0-'/2 (src/ns_memcached.erl, line 302)

      in call from misc:'-executing_on_new_process/1-fun-0-'/3 (src/misc.erl, line 1494)

    ancestors: [<0.29734.331>,<0.29863.331>,<0.28870.331>,<0.29866.331>,

                  <0.29865.331>,compaction_new_daemon,ns_server_sup,

                  ns_server_nodes_sup,<0.153.0>,ns_server_cluster_sup,

                  <0.89.0>]

    messages: []

    links: [<0.29734.331>]

    dictionary: []

    trap_exit: false

    status: running

    heap_size: 2586

    stack_size: 27

    reductions: 2021

  neighbours: