panic: Incrementing non-positive ref count

goroutine 2855634 [running]:
gvisor.dev/gvisor/pkg/refs.(*AtomicRefCount).IncRef(...)
	pkg/refs/refcounter.go:370
gvisor.dev/gvisor/pkg/sentry/fs.(*Dirent).IncRef(0xc00038da20)
DIAGNOSIS:
retrieving stacks: getting sandbox "ci-gvisor-kvm-direct-overlay-host-race-2" stacks: urpc method "debug.Stacks" failed: connection reset by peer