kvserver: TestClosedTimestampCantServeForWritingTransaction panics

[andreimatei]

After 24s of stressing on my machine:

=== RUN   TestClosedTimestampCantServeForWritingTransaction
    test_log_scope.go:73: test logs captured to: /tmp/logTestClosedTimestampCantServeForWritingTransaction946845855
    test_log_scope.go:74: use -show-logs to present logs inline
panic: descriptor is not initialized: r37:{-} [<no replicas>, next=0, gen=0]

goroutine 5669 [running]:
github.com/cockroachdb/cockroach/pkg/roachpb.NewRangeKeyMismatchError(0x535dee0, 0xc003e7f1d0, 0xc0026996c0, 0x3, 0x8, 0xc0026996c8, 0x2, 0x8, 0xc004700150, 0xc003d92aa0, ...)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/roachpb/errors.go:561 +0x305
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).checkSpanInRangeRLocked(0xc005306000, 0x535dee0, 0xc003e7f1d0, 0xc0026996c0, 0x3, 0x8, 0xc0026996c8, 0x2, 0x8, 0x0, ...)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica.go:1282 +0x1bf
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).checkExecutionCanProceed(0xc005306000, 0x535dee0, 0xc003e7f1d0, 0xc0046746e0, 0xc004700a80, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica.go:1200 +0x293
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).executeReadOnlyBatch(0xc005306000, 0x535dee0, 0xc003e7f1d0, 0xc0046746e0, 0xc004700a80, 0x0, 0x0, 0x0)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica_read.go:41 +0xf0
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).executeBatchWithConcurrencyRetries(0xc005306000, 0x535dee0, 0xc003e7f1d0, 0xc0046746e0, 0x4cd7738, 0x0, 0x0)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica_send.go:275 +0x336
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).sendWithRangeID(0xc005306000, 0x535de20, 0xc006122840, 0x25, 0xc0046746e0, 0x64, 0x3fc3333333333333)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica_send.go:91 +0x27f
github.com/cockroachdb/cockroach/pkg/kv/kvserver.(*Replica).Send(...)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/replica_send.go:34
github.com/cockroachdb/cockroach/pkg/kv/kvserver_test.verifyCanReadFromAllRepls.func1(0xc0032fd0d0, 0x4cddbc0)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/pkg/kv/kvserver/closed_timestamp_test.go:1344 +0x245
golang.org/x/sync/errgroup.(*Group).Go.func1(0xc004b4f290, 0xc002e09320)
        /home/andrei/src/github.com/cockroachdb/cockroach-2/vendor/golang.org/x/sync/errgroup/errgroup.go:57 +0x59
created by golang.org/x/sync/errgroup.(*Group).Go
        /home/andrei/src/github.com/cockroachdb/cockroach-2/vendor/golang.org/x/sync/errgroup/errgroup.go:54 +0x66

[nvanbenschoten]

Yeah, this is fixed by #60023. I missed @aayushshah15's rapid review.