Distinct operator keeps reference to recycled annotated values

Distinct selects sometimes panic with this stack

_time=2021-06-24T08:13:50.389+00:00 _level=SEVERE _msg=stack: goroutine 1513192 [running]:
github.com/couchbase/query/execution.(*Context).Recover(0xc08bf16000, 0xc08bf186c0)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/context.go:647 +0xbc
panic(0x1debbc0, 0x309f4f0)
/home/couchbase/.cbdepscache/exploded/x86_64/go-1.11.4/go/src/runtime/panic.go:513 +0x1b9
github.com/couchbase/query/value.(*annotatedValue).Field(0xc1014b3db0, 0xc04727cb81, 0xc, 0x2240aa0, 0xc1014b3db0, 0x1)
<autogenerated>:1 +0x32
github.com/couchbase/query/expression.(*Field).Apply(0xc04788e730, 0x2229680, 0xc08bf16000, 0x2240aa0, 0xc1014b3db0, 0x2241a60, 0xc07dae1cf0, 0x0, 0x0, 0x1078625, ...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/nav_field.go:160 +0xcd
github.com/couchbase/query/expression.(*BinaryFunctionBase).BinaryEval(0xc04788e730, 0x22106e0, 0xc04788e730, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x2241a60, 0xc07dae1c50, 0x2241160, ...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/function.go:401 +0x170
github.com/couchbase/query/expression.(*Field).Evaluate(0xc04788e730, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0xc0526b7bf8, 0xd0762f, 0xc12f9a4080, 0x80)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/nav_field.go:52 +0x70
github.com/couchbase/query/expression.(*BinaryFunctionBase).BinaryEval(0xc04788e780, 0x2210680, 0xc04788e780, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x80, 0x1d74e20, 0x32ec901, ...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/function.go:395 +0xbf
github.com/couchbase/query/expression.(*Eq).Evaluate(0xc04788e780, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x2241160, 0x30cf35f, 0x0, 0x0)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/comp_eq.go:48 +0x70
github.com/couchbase/query/expression.(*FunctionBase).Eval(0xc04788e7d0, 0x220fcc0, 0xc04788e7d0, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x0, 0x0, 0x0, ...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/function.go:147 +0xfc
github.com/couchbase/query/expression.(*And).Evaluate(0xc04788e7d0, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x2241160, 0x32ec92c, 0x0, 0x0)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/logic_and.go:43 +0x70
github.com/couchbase/query/expression.(*FunctionBase).Eval(0xc04788e820, 0x220fcc0, 0xc04788e820, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0x0, 0x0, 0x0, ...)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/function.go:147 +0xfc
github.com/couchbase/query/expression.(*And).Evaluate(0xc04788e820, 0x2240aa0, 0xc083349270, 0x2229680, 0xc08bf16000, 0xc08bf186c0, 0x2245960, 0xc08bf18480, 0x2278700)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/expression/logic_and.go:43 +0x70
github.com/couchbase/query/execution.(*Filter).processItem(0xc08bf186c0, 0x2278700, 0xc083349270, 0xc08bf16000, 0x1)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/filter.go:60 +0xa3
github.com/couchbase/query/execution.(*base).runConsumer.func1()
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/base.go:845 +0x219
github.com/couchbase/query/util.(*Once).Do(0xc08bf187c8, 0xc000acef38)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/util/sync.go:54 +0x4a
github.com/couchbase/query/execution.(*base).runConsumer(0xc08bf186c0, 0x2229880, 0xc08bf186c0, 0xc08bf16000, 0x0, 0x0)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/base.go:792 +0xa2
github.com/couchbase/query/execution.(*Filter).RunOnce(0xc08bf186c0, 0xc08bf16000, 0x0, 0x0)
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/filter.go:50 +0x5c
created by github.com/couchbase/query/execution.(*base).runConsumer.func1
/home/couchbase/jenkins/workspace/couchbase-server-unix/goproj/src/github.com/couchbase/query/execution/base.go:835 +0x2d6