[system test] panic: Post http://l...8091/_metakv: CBAuth database is stale: last reason: dial tcp 127.0.0.1:8091: connection refused

1.Load 5M data on the cluster
2. Keep querying on the system
3. Reboot entire cluster –

Seeing a number of panics on the system - projector logs ( which is strange considering there are no gsi indexes defined on the system)

panic: Post http://127.0.0.1:8091/_metakv: CBAuth database is stale: last reason: dial tcp 127.0.0.1:8091: connection refused

goroutine 16 [running]:
runtime.panic(0xab9040, 0xc20807aba0)
/usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
github.com/couchbase/indexing/secondary/common.CrashOnError(0x7fcd84e39530, 0xc20807aba0)
/home/couchbase/jenkins/workspace/sherlock-unix/goproj/src/github.com/couchbase/indexing/secondary/common/util.go:352 +0x4f
github.com/couchbase/indexing/secondary/projector.NewProjector(0x400, 0xc20807a9c0, 0x1f)
/home/couchbase/jenkins/workspace/sherlock-unix/goproj/src/github.com/couchbase/indexing/secondary/projector/projector.go:49 +0x105
main.main()
/home/couchbase/jenkins/workspace/sherlock-unix/goproj/src/github.com/couchbase/indexing/secondary/cmd/projector/main.go:92 +0x5c7

goroutine 19 [finalizer wait]:
runtime.park(0x415070, 0x12d2b68, 0x12b1149)
/usr/local/go/src/pkg/runtime/proc.c:1369 +0x89
runtime.parkunlock(0x12d2b68, 0x12b1149)
/usr/local/go/src/pkg/runtime/proc.c:1385 +0x3b
runfinq()
/usr/local/go/src/pkg/runtime/mgc0.c:2644 +0xcf
runtime.goexit()
/usr/local/go/src/pkg/runtime/proc.c:1445

goroutine 20 [syscall]:
os/signal.loop()
/usr/local/go/src/pkg/os/signal/signal_unix.go:21 +0x1e
created by os/signal.init·1
/usr/local/go/src/pkg/os/signal/signal_unix.go:27 +0x32

goroutine 24 [sleep]:
time.Sleep(0x3b9aca00)
/usr/local/go/src/pkg/runtime/time.goc:39 +0x31
github.com/couchbase/cbauth/revrpc.(*DefaultErrorPolicy).try(0xc20803cc80, 0x7fcd84e39468, 0xc20804f400, 0x0, 0x0)
/home/couchbase/jenkins/workspace/sherlock-unix/godeps/src/github.com/couchbase/cbauth/revrpc/revrpc.go:205 +0x3ee
github.com/couchbase/cbauth/revrpc.*DefaultErrorPolicy.(github.com/couchbase/cbauth/revrpc.try)·fm(0x7fcd84e39468, 0xc20804f400, 0x0, 0x0)
/home/couchbase/jenkins/workspace/sherlock-unix/godeps/src/github.com/couchbase/cbauth/revrpc/revrpc.go:217 +0x4c

Attaching logs and detailed stack.