Enabling use of index pausing during rebalance crashes set view group

Running with my consistent views patches and enabled (initially disabled) index pausing:

1. rlwrap ../send-diag-eval lh:9000 -q
   ns_config:set(index_pausing_disabled, false).
   ok
   #

The following rebalance failed:

Rebalance exited with reason {{{{function_clause,
[{orddict,fetch,
[53,
[

{96,9852}

,

{97,16395}

,

{98,16420}

,

{99,9837}

,

{100,9837}

,

{101,22988}

,

{102,16395}

,

{103,9852}

,

{104,9855}

,

{105,16385}

]]},

{couch_set_view_group, '-process_mark_as_unindexable/2-fun-0-',3}

,

{lists,foldl,3}

,

{couch_set_view_group, process_mark_as_unindexable,2}

,

{couch_set_view_group,handle_call,3}

,

{gen_server,handle_msg,5}

,

{proc_lib,init_p_do_apply,3}

]},
{gen_server,call,
[<0.614.0>,

{mark_as_unindexable,"5"}

,
infinity]}},
{gen_server,call,
['capi_set_view_manager-default',

{set_vbucket_states, [active,active,active,active,active,active, active,active,active,active,active,active, active,active,active,active,active,active, active,active,active,active,active,active, active,active,active,active,active,active, active,active,replica,replica,replica, replica,replica,replica,replica,replica, replica,replica,replica,missing,missing, missing,missing,missing,missing,missing, missing,missing,missing,active,missing, missing,missing,missing,missing,missing, missing,missing,missing,missing,replica, replica,replica,replica,replica,replica, replica,replica,replica,replica,replica, missing,missing,missing,missing,missing, missing,missing,missing,missing,missing, missing,missing,missing,missing,missing, missing,missing,missing,missing,missing, missing,active,active,active,active,active, active,active,active,active,active,replica, replica,replica,replica,replica,replica, replica,replica,replica,replica,replica, replica,replica,replica,replica,replica, replica,replica,replica,replica,replica, missing], [undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,paused,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined, undefined,undefined,undefined,undefined]}

,
infinity]}},
{gen_server,call,
[

{'janitor_agent-default','n_0@10.17.2.163'}

,
{if_rebalance,<0.2974.0>,
{update_vbucket_state,53,active,paused,
undefined}},
60000]}}