crash during failover of two nodes in a 4 node cluster

panic: runtime error: index out of range

goroutine 329 [running]:
github.com/couchbaselabs/gocb/gocbcore.(*agent).routerequest(0xc208040a00, 0xc2087c2d80, 0xc2085e7700)
/users/subhashni/sources/sdkd-go/sdkd-go/src/github.com/couchbaselabs/gocb/gocbcore/agentrouting.go:286 +0x179
github.com/couchbaselabs/gocb/gocbcore.(*agent).dispatchdirect(0xc208040a00, 0xc2087c2d80, 0x0, 0x0)
/users/subhashni/sources/sdkd-go/sdkd-go/src/github.com/couchbaselabs/gocb/gocbcore/agentrouting.go:294 +0x44
github.com/couchbaselabs/gocb/gocbcore.(*agent).dispatchop(0xc208040a00, 0xc2087c2d80, 0x0, 0x0, 0x0, 0x0)
/users/subhashni/sources/sdkd-go/sdkd-go/src/github.com/couchbaselabs/gocb/gocbcore/agentops.go:12 +0x56
github.com/couchbaselabs/gocb/gocbcore.(*agent).store(0xc208040a00, 0x1, 0xc2087d7770, 0x22, 0x30, 0xc2087c2cf0, 0x83, 0x90, 0xc200000000, 0x0, ...)
/users/subhashni/sources/sdkd-go/sdkd-go/src/github.com/couchbaselabs/gocb/gocbcore/agentops.go:215 +0x336
github.com/couchbaselabs/gocb/gocbcore.(*agent).set(0xc208040a00, 0xc2087d7770, 0x22, 0x30, 0xc2087c2cf0, 0x83, 0x90, 0x0, 0xc2085e76e0, 0x0, ...)
/users/subhashni/sources/sdkd-go/sdkd-go/src/github.com/couchbaselabs/gocb/gocbcore/agentops.go:223 +0xdd
main.(*handle_v3).dsmutate(0xc208136e40)
/users/subhashni/sources/sdkd-go/sdkd-go/handle.go:335 +0x234
main.(*worker).processrequest(0xc20807a080)
/users/subhashni/sources/sdkd-go/sdkd-go/worker.go:106 +0x968
created by main.(*worker).requesthandler
/users/subhashni/sources/sdkd-go/sdkd-go/worker.go:164 +0xc9