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

goroutine 78 [running]:
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).UnidirectionalConnect(0xc42042e1e0, 0xc42053b8c0, 0x42eb2d, 0xc42039a1c0)
	pkg/tcpip/transport/unix/connectionless.go:70 +0x158
gvisor.googlesource.com/gvisor/pkg/tcpip/transport/unix.(*connectionlessEndpoint).Connect(0xc42042e3c0, 0x7fcd54046060, 0xc42042e1e0, 0x6e)
	pkg/tcpip/transport/unix/connectionless.go:107 +0x43
gvisor.googlesource.com/gvisor/pkg/sentry/socket/unix.(*SocketOperations).Connect(0xc42042e460, 0xc420542900, 0xc420450000, 0x6e, 0x6e, 0x1, 0x0)
	pkg/sentry/socket/unix/unix.go:340 +0xe6
gvisor.googlesource.com/gvisor/pkg/sentry/syscalls/linux.Connect(0xc420542900, 0x3, 0x20000000, 0x6e, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
	pkg/sentry/syscalls/linux/sys_socket.go:278 +0x21e
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc420542900, 0x2a, 0x3, 0x20000000, 0x6e, 0x0, 0x0, 0x0, 0xc4201f4d80, 0x20000000, ...)
	pkg/sentry/kernel/task_syscall.go:162 +0x14f
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc420542900, 0x2a, 0x3, 0x20000000, 0x6e, 0x0, 0x0, 0x0, 0x3, 0x20000000)
	pkg/sentry/kernel/task_syscall.go:278 +0x7e
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc420542900, 0x2a, 0x3, 0x20000000, 0x6e, 0x0, 0x0, 0x0, 0xc4201f4e80, 0xc42053bc50)
	pkg/sentry/kernel/task_syscall.go:241 +0xc4
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc420542900, 0x2, 0xc4201f4d80)
	pkg/sentry/kernel/task_syscall.go:216 +0x19d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc420542900, 0x10dd380, 0x0)
	pkg/sentry/kernel/task_run.go:217 +0x157d
gvisor.googlesource.com/gvisor/pkg/sentry/kernel.(*Task).run(0xc420542900, 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