[FTS] Crash caused due to a panic within third-party dependency "RoaringBitmap/roaring"

panic: runtime error: index out of rangepanic: runtime error: index out of range

goroutine 6008269 [running]:github.com/RoaringBitmap/roaring.(*runIterator16).advanceIfNeeded(0xc159d3b160, 0xc000142519) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/RoaringBitmap/roaring/runcontainer.go:1253 +0x1e5github.com/RoaringBitmap/roaring.(*intIterator).AdvanceIfNeeded(0xc00875f770, 0x12519) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/RoaringBitmap/roaring/roaring.go:263 +0xa3github.com/blevesearch/bleve/index/scorch/segment/zap.(*PostingsIterator).nextDocNumAtOrAfter(0xc07b3e0f20, 0x12519, 0x3e800000, 0xc000370800, 0x0, 0x0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index/scorch/segment/zap/posting.go:665 +0x97github.com/blevesearch/bleve/index/scorch/segment/zap.(*PostingsIterator).nextAtOrAfter(0xc07b3e0f20, 0x12519, 0x15, 0x610080, 0xc11910ac80, 0x1b22cf2) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index/scorch/segment/zap/posting.go:530 +0x4dgithub.com/blevesearch/bleve/index/scorch/segment/zap.(*PostingsIterator).Advance(0xc07b3e0f20, 0x12519, 0x14, 0x12519, 0x0, 0x0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index/scorch/segment/zap/posting.go:525 +0x35github.com/blevesearch/bleve/index/scorch.(*IndexSnapshotTermFieldReader).Advance(0xc003829080, 0xc14d650ed8, 0x8, 0x8, 0xc088ada728, 0xc014a35e48, 0xc014a35e48, 0xc00a2b0a00) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index/scorch/snapshot_index_tfr.go:149 +0x21fgithub.com/blevesearch/bleve/search/searcher.(*TermSearcher).Advance(0xc088ada700, 0xc04e8879e0, 0xc14d650ed8, 0x8, 0x8, 0x8, 0xffffffffffffffff, 0x0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/search/searcher/search_term.go:105 +0xe5github.com/blevesearch/bleve/search/searcher.(*DisjunctionHeapSearcher).Advance(0xc00a2b0a00, 0xc04e8879e0, 0xc14d650ed8, 0x8, 0x8, 0x8, 0x8, 0x1) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/search/searcher/search_disjunction_heap.go:246 +0x1d7github.com/blevesearch/bleve/search/searcher.(*ConjunctionSearcher).advanceChild(0xc239d37b00, 0xc04e8879e0, 0x2, 0xc14d650ed8, 0x8, 0x8, 0x1, 0x0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/search/searcher/search_conjunction.go:251 +0x99github.com/blevesearch/bleve/search/searcher.(*ConjunctionSearcher).Next(0xc239d37b00, 0xc04e8879e0, 0x0, 0xc11910ac80, 0xc014a35db0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/search/searcher/search_conjunction.go:198 +0x135github.com/blevesearch/bleve/search/collector.(*TopNCollector).Collect(0xc07b666000, 0x1070c20, 0xc03dd5a750, 0x1076e20, 0xc239d37b00, 0x1079ea0, 0xc11910ac80, 0x0, 0x1076e20) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/search/collector/topn.go:213 +0x35agithub.com/blevesearch/bleve.(*indexImpl).SearchInContext(0xc000183490, 0x1070c20, 0xc03dd5a750, 0xc000486420, 0x0, 0x0, 0x0) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index_impl.go:532 +0xe0agithub.com/couchbase/cbft.(*cacheBleveIndex).SearchInContext(0xc03dd5a6c0, 0x1070c20, 0xc03dd5a750, 0xc000486420, 0x0, 0xc13815afc0, 0x604f7b) /home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/cbft/cache_bleve.go:110 +0x37fgithub.com/blevesearch/bleve.MultiSearch.func1(0x107b1e0, 0xc03dd5a6c0, 0xc000486420) /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index_alias_impl.go:469 +0xf2created by github.com/blevesearch/bleve.MultiSearch /home/couchbase/jenkins/workspace/couchbase-server-unix/godeps/src/github.com/blevesearch/bleve/index_alias_impl.go:476 +0x1e0