root@franc:/Volume/5.1.0/opt/rabbitmq_server-2.8.4# sbin/rabbitmq-server
Activating RabbitMQ plugins ...
ERROR: generation of boot script file sbin/../var/lib/rabbitmq/mnesia/rabbit@localhost-plugins-expand/rabbit.script failed:
{'EXIT',{{badmatch,{erl_prim_loader,error}},
         [{xref_utils,find_beam,1,[{file,"xref_utils.erl"},{line,458}]},
          {xref_base,'-make_libs/5-fun-0-',2,
                     [{file,"xref_base.erl"},{line,1441}]},
          {lists,foldl,3,[{file,"lists.erl"},{line,1197}]},
          {xref_base,make_libs,5,[{file,"xref_base.erl"},{line,1446}]},
          {xref_base,do_set_up,1,[{file,"xref_base.erl"},{line,1304}]},
          {xref_base,do_set_up,2,[{file,"xref_base.erl"},{line,1160}]},
          {xref_base,q,3,[{file,"xref_base.erl"},{line,283}]},
          {xref,handle_call,3,[{file,"xref.erl"},{line,494}]}]}}

root@franc:/Volume/5.1.0/opt/rabbitmq_server-2.8.4#