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

goroutine 692 [running]:
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).UnidirectionalConnect(0xc42068acd0, 0xc420731a60, 0x427f59, 0x8)
	pkg/tcpip/transport/unix/connectionless.go:70 +0xed
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).Connect(0xc420744780, 0x3f0508cac140, 0xc42068acd0, 0x6e)
	pkg/tcpip/transport/unix/connectionless.go:107 +0x35
gvisor.googlesource.com/gvisor/pkg/sentry/socket/unix.(*SocketOperations).Connect(0xc420744820, 0xc4201a6400, 0xc420430230, 0x6e, 0x6e, 0x1, 0x0)
	pkg/sentry/socket/unix/unix.go:340 +0xc6
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Connect(0xc4201a6400, 0x6, 0x20000240, 0x6e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:278 +0x1eb
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc4201a6400, 0x2a, 0x6, 0x20000240, 0x6e, 0x0, 0x0, 0x0, 0xc420731ca8, 0xbb9fc0, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x307
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc4201a6400, 0x2a, 0x6, 0x20000240, 0x6e, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/kernel/task_syscall.go:278 +0x62
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc4201a6400, 0x2a, 0x6, 0x20000240, 0x6e, 0x0, 0x0, 0x0, 0xc42045a800, 0xc420731e00)
	pkg/sentry/kernel/task_syscall.go:241 +0x91
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc4201a6400, 0x2, 0xc420124d80)
	pkg/sentry/kernel/task_syscall.go:216 +0x10c
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc4201a6400, 0xc6d8e0, 0x0)
	pkg/sentry/kernel/task_run.go:217 +0xed8
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc4201a6400, 0x20)
	pkg/sentry/kernel/task_run.go:95 +0x174
created by gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).Start
	pkg/sentry/kernel/task_start.go:251 +0x100