Internal Server Error - {"error":"case_clause","reason":"false"}

Using 4.5.1-2844

A view call is failing with Internal Server Error -

{"error":"case_clause","reason":"false"}

. This build is the first time I have seen this issue. It seems to be intermittent so it is possible it is an existing issue. I reran the test and it was successful.

Excerpt from the sync_gateway log showing the error.

channels via the admin_channels parameter. – rest.emitAccessRelatedWarnings() at server_context.go:897
2016-09-21T15:58:06.722-07:00 Starting admin server on 0.0.0.0:4985
2016-09-21T15:58:06.727-07:00 Starting server on :4984 ...
2016-09-21T15:58:07.559-07:00 HTTP: #001: PUT /db/_user/bulk_db_user_1 (ADMIN)
2016-09-21T15:58:07.562-07:00 HTTP: #002: PUT /db/_user/bulk_db_user_2 (ADMIN)
2016-09-21T15:58:07.566-07:00 HTTP: #003: PUT /db/_user/bulk_db_user_3 (ADMIN)
2016-09-21T15:58:07.567-07:00 HTTP: #004: PUT /db/_user/bulk_db_user_0 (ADMIN)
2016-09-21T15:58:07.569-07:00 HTTP: #005: PUT /db/_user/bulk_db_user_4 (ADMIN)
2016-09-21T15:58:07.572-07:00 HTTP: #006: PUT /db/_user/bulk_db_user_5 (ADMIN)
2016-09-21T15:58:07.573-07:00 HTTP: #007: PUT /db/_user/bulk_db_user_6 (ADMIN)
2016-09-21T15:58:07.574-07:00 HTTP: #008: PUT /db/_user/bulk_db_user_7 (ADMIN)
2016-09-21T15:58:07.576-07:00 HTTP: #009: PUT /db/_user/bulk_db_user_8 (ADMIN)
2016-09-21T15:58:07.578-07:00 HTTP: #010: PUT /db/_user/bulk_db_user_9 (ADMIN)
2016-09-21T15:58:07.625-07:00 WARNING: channelComputer.ComputeRolesForUser failed on user bulk_db_user_6: error executing view req at http://s61401cnt72.sc.couchbase.com:8092/data-bucket/_design/sync_gateway/_view/role_access?key=%22bulk_db_user_6%22&stale=false: 500 Internal Server Error -

{"error":"case_clause","reason":"false"}

– auth.(*Authenticator).rebuildRoles() at auth.go:181
2016-09-21T15:58:07.625-07:00 HTTP: #007: --> 500 Internal error: error executing view req at http://s61401cnt72.sc.couchbase.com:8092/data-bucket/_design/sync_gateway/_view/role_access?key=%22bulk_db_user_6%22&stale=false: 500 Internal Server Error -

{"error":"case_clause","reason":"false"}

(52.2 ms)
2016-09-21 15:58:07.654827 I | Unsolicited response received on idle HTTP channel starting with "H"; err=<nil>
2016-09-21T15:58:07.890-07:00 HTTP+: #005: --> 201 Created (320.7 ms)
2016-09-21T15:58:07.893-07:00 HTTP+: #002: --> 201 Created (331.1 ms)
2016-09-21T15:58:07.894-07:00 HTTP+: #004: --> 201 Created (327.4 ms)
2016-09-21T15:58:07.894-07:00 HTTP+: #008: --> 201 Created (320.7 ms)
2016-09-21T15:58:07.895-07:00 HTTP+: #003: --> 201 Created (328.6 ms)
2016-09-21T15:58:07.895-07:00 HTTP+: #006: --> 201 Created (323.7 ms)
2016-09-21T15:58:07.896-07:00 HTTP+: #010: --> 201 Created (317.9 ms)
2016-09-21T15:58:07.896-07:00 HTTP+: #001: --> 201 Created (337.1 ms)
2016-09-21T15:58:07.898-07:00 HTTP+: #009: --> 201 Created (321.6 ms)
2016-09-21T15:58:09.287-07:00 Changes+: Notifying that "data-bucket" changed (keys="{_sync:user:bulk_db_user_5}") count=2
2016-09-21T15:58:09.287-07:00 Changes+: Notifying that "data-bucket" changed (keys="{_sync:user:bulk_db_user_0}") count=3
2016-09-21T15:58:09.287-07:00 Changes+: Notifying that "data-bucket" changed (keys="{_sync:user:bulk_db_user_5}") count=2
2016-09-21T15:58:09.287-07:00 Changes+: Notifying that "data-bucket" changed (keys="{_sync:user:bulk_db_user_0}") count=3
2016-09-21T15:58:09.287-07:00 Cache: Received #6 ("_user/bulk_db_user_5")
2016-09-21T15:58:09.287-07:00 Cache: Received #3 ("_user/bulk_db_user_0")
2016-09-21T15:58:09.287-07:00 Cache: Deferring #6 (1 now waiting for #1...#5)