under unknown circumstances ns_server deps do not get rebuild (was: Cannot access web console when using cluster run due to crashes in _uistats)

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

  crasher:

    initial call: work_queue:init/1

    pid: <0.939.0>

    registered_name: menelaus_web_cache

    exception exit: {error,

                     {badrpc,

                      {'EXIT',

                       {undef,

                        [{capi_utils,get_design_doc_signatures,

                          [mapreduce_view,"default"],

                          []},

                         {ns_couchdb_api,handle_rpc,1,

                          [{file,"src/ns_couchdb_api.erl"},{line,197}]},

                         {rpc,'-handle_call_call/6-fun-0-',5,

                          [{file,"rpc.erl"},{line,205}]}]}}}}

      in function  gen_server:terminate/6 (gen_server.erl, line 744)

    ancestors: [menelaus_sup,ns_server_sup,ns_server_nodes_sup,<0.149.0>,

                  ns_server_cluster_sup,<0.88.0>]

    messages: []

    links: [<0.530.0>]

    dictionary: [{seen_keys_stack,[]}]

    trap_exit: false

    status: running

    heap_size: 4185

    stack_size: 27

    reductions: 14710

  neighbours:

Stack: [{ns_couchdb_api,rpc_couchdb_node,4,

                        [{file,"src/ns_couchdb_api.erl"},{line,160}]},

        {menelaus_stats,do_couchbase_view_stats_descriptions,1,

                        [{file,"src/menelaus_stats.erl"},{line,1240}]},

        {menelaus_stats,'-simple_memoize/3-fun-0-',2,

                        [{file,"src/menelaus_stats.erl"},{line,1062}]},

        {menelaus_web_cache,do_compute_with_expiration,3,

                            [{file,"src/menelaus_web_cache.erl"},{line,101}]},

        {work_queue,handle_call,3,[{file,"src/work_queue.erl"},{line,56}]},

        {gen_server,handle_msg,5,[{file,"gen_server.erl"},{line,585}]},

        {proc_lib,wake_up,3,[{file,"proc_lib.erl"},{line,249}]}]

[error_logger:error,2015-06-26T09:46:46.585-07:00,n_0@127.0.0.1:error_logger<0.6.0>:ale_error_logger_handler:do_log:203]** Generic server menelaus_web_cache terminating 

** Last message in was #Fun<menelaus_web_cache.2.70484883>

** When Server state == []

** Reason for termination == 

** {error,

       {badrpc,

           {'EXIT',

               {undef,

                   [{capi_utils,get_design_doc_signatures,

                        [mapreduce_view,"default"],

                        []},

                    {ns_couchdb_api,handle_rpc,1,

                        [{file,"src/ns_couchdb_api.erl"},{line,197}]},

                    {rpc,'-handle_call_call/6-fun-0-',5,

                        [{file,"rpc.erl"},{line,205}]}]}}}}

[ns_server:error,2015-06-26T09:46:46.585-07:00,n_0@127.0.0.1:<0.853.0>:menelaus_web:loop:184]Server error during processing: ["web request failed",

                                 {path,"/_uistats"},

                                 {method,'GET'},

                                 {type,exit},

                                 {what,

                                  {{error,

                                    {badrpc,

                                     {'EXIT',

                                      {undef,

                                       [{capi_utils,

                                         get_design_doc_signatures,

                                         [mapreduce_view,"default"],

                                         []},

                                        {ns_couchdb_api,handle_rpc,1,

                                         [{file,"src/ns_couchdb_api.erl"},

                                          {line,197}]},

                                        {rpc,'-handle_call_call/6-fun-0-',5,

                                         [{file,"rpc.erl"},{line,205}]}]}}}},

                                   {gen_server,call,

                                    [<0.1003.0>,

                                     #Fun<menelaus_web_cache.2.70484883>,

                                     infinity]}}},

                                 {trace,

                                  [{gen_server,call,3,

                                    [{file,"gen_server.erl"},{line,188}]},

                                   {menelaus_stats,membase_stats_description,

                                    3,

                                    [{file,"src/menelaus_stats.erl"},

                                     {line,1829}]},

                                   {menelaus_stats,base_stats_directory,3,

                                    [{file,"src/menelaus_stats.erl"},

                                     {line,1970}]},

                                   {menelaus_stats,serve_aggregated_ui_stats,

                                    2,

                                    [{file,"src/menelaus_stats.erl"},

                                     {line,2144}]},

                                   {request_throttler,do_request,3,

                                    [{file,"src/request_throttler.erl"},

                                     {line,59}]},

                                   {menelaus_web,loop,2,

                                    [{file,"src/menelaus_web.erl"},

                                     {line,162}]},

                                   {mochiweb_http,headers,5,

                                    [{file,

                                      "/Users/mikewied/couchbase/4.0.0/couchdb/src/mochiweb/mochiweb_http.erl"},

                                     {line,94}]},

                                   {proc_lib,init_p_do_apply,3,

                                    [{file,"proc_lib.erl"},{line,239}]}]}]

127.0.0.1 - ui-token [26/Jun/2015:09:46:46 -0700] "GET /_uistats?bucket=default&zoom=week&_=1435337206580 HTTP/1.1" 500 44 http://localhost:9000/index.html Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36