4.5.1 CLONE - Online Upgrade From 2.5.0 to Watson failed

Rebalance exited with reason {unexpected_exit,

                              {'EXIT',<0.15842.6>,

                               {{badmatch,[{<18684.9796.2>,noproc}]},

                                [{misc,

                                  sync_shutdown_many_i_am_trapping_exits,1,

                                  [{file,"src/misc.erl"},{line,1610}]},

                                 {misc,try_with_maybe_ignorant_after,2,

                                  [{file,"src/misc.erl"},{line,1639}]},

                                 {gen_server,terminate,6,

                                  [{file,"gen_server.erl"},{line,719}]},

                                 {proc_lib,init_p_do_apply,3,

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