Inconsistent Internal State reached in indexer during handlePrepareRecovery

While testing out rollback to 0 scenario, in one of the trials, I encountered a panic in indexer after receiving rollback. From the indexer log -

2016-04-19T10:59:07.754+05:30 [Error] MutationMgr::handleRemoveIndexListFromStream Stream Already Closed MAINT_STREAM
2016-04-19T10:59:07.754+05:30 [Error] Indexer::sendStreamUpdateToWorker - Error received from MutationMgr processing Msg
Message: MsgStreamUpdate
Type: REMOVE_BUCKET_FROM_STREAM
Stream: MAINT_STREAM
Bucket: default
BuildTS: []
IndexList: []
RestartTs: <nil> Err <nil>. Aborted.
panic: Inconsistent Internal State

goroutine 1 [running]:
panic(0x4a99da0, 0xc8201457a0)
/Users/prathibha-mac/.cbdepscache/exploded/x86_64/go-1.6/go/src/runtime/panic.go:464 +0x3e6 fp=0xc823192cd0 sp=0xc823192c50
github.com/couchbase/indexing/secondary/common.CrashOnError(0x6340000, 0xc8201457a0)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/common/util.go:367 +0x4b fp=0xc823192cf8 sp=0xc823192cd0
github.com/couchbase/indexing/secondary/indexer.(*indexer).stopBucketStream(0xc82007a6c0, 0x1, 0xc823a63785, 0x7)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/indexer/indexer.go:2680 +0x432 fp=0xc823192ea8 sp=0xc823192cf8
github.com/couchbase/indexing/secondary/indexer.(*indexer).handlePrepareRecovery(0xc82007a6c0, 0x1ab9cd68, 0xc82c8ce780)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/indexer/indexer.go:1342 +0x20a fp=0xc823192f58 sp=0xc823192ea8
github.com/couchbase/indexing/secondary/indexer.(*indexer).handleWorkerMsgs(0xc82007a6c0, 0x1ab9cd68, 0xc82c8ce780)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/indexer/indexer.go:699 +0x1551 fp=0xc823193188 sp=0xc823192f58
github.com/couchbase/indexing/secondary/indexer.(*indexer).run(0xc82007a6c0)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/indexer/indexer.go:482 +0x15f fp=0xc8231932e0 sp=0xc823193188
github.com/couchbase/indexing/secondary/indexer.NewIndexer(0xc820142390, 0x0, 0x0, 0x0, 0x0)
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/indexer/indexer.go:364 +0x3f1b fp=0xc823193c30 sp=0xc8231932e0
main.main()
/Users/prathibha-mac/Documents/source/cb/goproj/src/github.com/couchbase/indexing/secondary/cmd/indexer/main.go:106 +0x14f8 fp=0xc823193f40 sp=0xc823193c30
runtime.main()

I have attached the entire logs of n_0 and n_1. This was tested on local cluster_run on mac.