panic: runtime error: index out of range [1] with length 0

goroutine 3054488 [running]:
encoding/binary.littleEndian.Uint16(...)
DIAGNOSIS:
I0303 14:42:12.379695   55579 main.go:305] ***************************
I0303 14:42:12.379762   55579 main.go:306] Args: [/syzkaller/managers/main/current/image -root /syzkaller/managers/main/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=none debug -stacks --ps ci-gvisor-main-2]
I0303 14:42:12.379816   55579 main.go:307] Version release-20200219.0-72-gce4d1e45bb88
I0303 14:42:12.379842   55579 main.go:308] PID: 55579
I0303 14:42:12.379869   55579 main.go:309] UID: 0, GID: 0
I0303 14:42:12.379910   55579 main.go:310] Configuration:
I0303 14:42:12.379935   55579 main.go:311] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0303 14:42:12.379973   55579 main.go:312] 		Platform: ptrace
I0303 14:42:12.380001   55579 main.go:313] 		FileAccess: shared, overlay: false
I0303 14:42:12.380040   55579 main.go:314] 		Network: none, logging: false
I0303 14:42:12.380068   55579 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0303 14:42:12.380095   55579 main.go:316] ***************************
D0303 14:42:12.385454   55579 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-2"
D0303 14:42:12.409217   55579 container.go:592] Signal container "ci-gvisor-main-2": signal 0
D0303 14:42:12.410606   55579 sandbox.go:806] Signal sandbox "ci-gvisor-main-2"
D0303 14:42:12.412954   55579 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-2"
D0303 14:42:12.415245   55579 urpc.go:534] urpc: successfully marshalled 96 bytes.
I0303 14:42:13.419372   55579 debug.go:122] Found sandbox "ci-gvisor-main-2", PID: 22111
I0303 14:42:13.419442   55579 debug.go:131] Retrieving sandbox stacks
D0303 14:42:13.419467   55579 sandbox.go:924] Stacks sandbox "ci-gvisor-main-2"
D0303 14:42:13.419482   55579 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-2"
W0303 14:42:13.419545   55579 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 22111: connection refused
retrieving stacks: connecting to control server at PID 22111: connection refused
W0303 14:42:13.419754   55579 main.go:338] Failure to execute command, err: 1