[system-test] Panic at go-couchbase.(*Bucket).doBulkGet (error: index out of range)

Build

4.0.0-3240

cbq crashes on .44, I see

panic: runtime error: index out of range

goroutine 360276 [running]:
github.com/couchbase/go-couchbase.(*Bucket).doBulkGet(0xc21e7b0d00, 0xc219a94adf, 0xc22311feb0, 0x1, 0x1, 0xc223000e40, 0xc2230010e0)
/home/couchbase/jenkins/workspace/sherlock-unix/godeps/src/github.com/couchbase/go-couchbase/client.go:202 +0x394
github.com/couchbase/go-couchbase.func·004()
/home/couchbase/jenkins/workspace/sherlock-unix/godeps/src/github.com/couchbase/go-couchbase/client.go:287 +0x159
created by github.com/couchbase/go-couchbase.(*Bucket).processBulkGet
/home/couchbase/jenkins/workspace/sherlock-unix/godeps/src/github.com/couchbase/go-couchbase/client.go:293 +0x2f3

goroutine 1 [chan receive, 6 minutes]:
main.signalCatcher(0xc2080820a0, 0xc20808c240, 0x0, 0x0)
/home/couchbase/jenkins/workspace/sherlock-unix/goproj/src/github.com/couchbase/query/server/cbq-engine/main.go:212 +0x1b5
main.main()
/home/couchbase/jenkins/workspace/sherlock-unix/goproj/src/github.com/couchbase/query/server/cbq-engine/main.go:202 +0x1755