Panic: runtime error: slice bounds out of range

I am getting the below error. What could be the cause?

Service 'n1ql' exited with status 2. Restarting. Messages:
panic: runtime error: slice bounds out of range [72:36]

goroutine 6354 [running]:
github.com/couchbase/query/primitives/couchbase.(*vbRangeScan).readCurrent(0xc008f841b0?)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/primitives/couchbase/memcached_scan.go:1136 +0x1b6
github.com/couchbase/query/primitives/couchbase.(*vbRangeScan).advance(...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/primitives/couchbase/memcached_scan.go:1170
github.com/couchbase/query/primitives/couchbase.(*seqScan).coordinator(0xc008f84120, 0xc0004ae508, 0x115886a46d)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/primitives/couchbase/memcached_scan.go:737 +0x1ddd
created by github.com/couchbase/query/primitives/couchbase.(*Bucket).StartKeyScan in goroutine 1417
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/primitives/couchbase/memcached_scan.go:80 +0x29f