panic: interface conversion: unix.Receiver is nil, not *unix.queueReceiver

goroutine 205 [running]:
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).UnidirectionalConnect(0xc42041c190, 0xc4201f78c0, 0x42eb2d, 0xc42010a300)
	pkg/tcpip/transport/unix/connectionless.go:70 +0x158
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).Connect(0xc42044ea00, 0x7fe7801ba000, 0xc42041c190, 0x80)
	pkg/tcpip/transport/unix/connectionless.go:107 +0x43
gvisor.googlesource.com/gvisor/pkg/sentry/socket/unix.(*SocketOperations).Connect(0xc42044eaa0, 0xc4204a5600, 0xc420474500, 0x80, 0x80, 0x1, 0x0)
	pkg/sentry/socket/unix/unix.go:340 +0xe6
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Connect(0xc4204a5600, 0x4, 0x20000040, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:278 +0x21e
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc4204a5600, 0x2a, 0x4, 0x20000040, 0x80, 0x0, 0x0, 0x0, 0xc420448000, 0x20000000, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x14f
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc4204a5600, 0x2a, 0x4, 0x20000040, 0x80, 0x0, 0x0, 0x0, 0x4, 0x20000040)
	pkg/sentry/kernel/task_syscall.go:278 +0x7e
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc4204a5600, 0x2a, 0x4, 0x20000040, 0x80, 0x0, 0x0, 0x0, 0xc420448100, 0xc4201f7c50)
	pkg/sentry/kernel/task_syscall.go:241 +0xc4
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc4204a5600, 0x2, 0xc420448000)
	pkg/sentry/kernel/task_syscall.go:216 +0x19d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc4204a5600, 0x10dd380, 0x0)
	pkg/sentry/kernel/task_run.go:217 +0x157d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc4204a5600, 0xd)
	pkg/sentry/kernel/task_run.go:95 +0x265
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:251 +0x194