Panic in ReplicationSpecService.ValidateExistingReplicationSpec

#1
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x8cc74]

goroutine 51 [running]:
github.com/couchbase/goxdcr/metadata_svc.(*ReplicationSpecService).ValidateExistingReplicationSpec(0xc2080e60c0, 0x0, 0x0, 0x0, 0x0, 0x0)
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/metadata_svc/replication_spec_service.go:418 +0x1b74
github.com/couchbase/goxdcr/metadata_svc.(*ReplicationSpecService).ValidateAndGC(0xc2080e60c0, 0x0)
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/metadata_svc/replication_spec_service.go:475 +0x43
github.com/couchbase/goxdcr/pipeline_manager.CheckPipelines()
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/pipeline_manager/pipeline_manager.go:213 +0x156
github.com/couchbase/goxdcr/replication_manager.(*replicationManager).checkReplicationStatus(0x8f2fa0, 0xc208011490)
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/replication_manager/replication_manager.go:204 +0x136
created by github.com/couchbase/goxdcr/replication_manager.func·001
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/replication_manager/replication_manager.go:136 +0x2b3

#2
panic: interface conversion: interface is nil, not int

goroutine 44 [running]:
github.com/couchbase/goxdcr/pipeline_manager.(*pipelineManager).launchUpdater(0x8f24c0, 0xc2080da851, 0x44, 0x0, 0x0, 0xc2080de630, 0x0, 0x0)
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/pipeline_manager/pipeline_manager.go:419 +0x110
github.com/couchbase/goxdcr/pipeline_manager.CheckPipelines()
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/pipeline_manager/pipeline_manager.go:218 +0x33e
github.com/couchbase/goxdcr/replication_manager.(*replicationManager).checkReplicationStatus(0x8f2fa0, 0xc2081164d0)
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/replication_manager/replication_manager.go:204 +0x136
created by github.com/couchbase/goxdcr/replication_manager.func·001
/Users/xiaomei/verify_builds/goproj/src/github.com/couchbase/goxdcr/replication_manager/replication_manager.go:136 +0x2b3