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

goroutine 403 [running]:
encoding/binary.littleEndian.Uint16(...)
	GOROOT/src/encoding/binary/binary.go:53
DIAGNOSIS:
I0303 05:57:40.728731    7481 main.go:305] ***************************
I0303 05:57:40.728789    7481 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-0]
I0303 05:57:40.728838    7481 main.go:307] Version release-20200219.0-72-gce4d1e45bb88
I0303 05:57:40.728866    7481 main.go:308] PID: 7481
I0303 05:57:40.728897    7481 main.go:309] UID: 0, GID: 0
I0303 05:57:40.728913    7481 main.go:310] Configuration:
I0303 05:57:40.728930    7481 main.go:311] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0303 05:57:40.728959    7481 main.go:312] 		Platform: ptrace
I0303 05:57:40.728976    7481 main.go:313] 		FileAccess: shared, overlay: false
I0303 05:57:40.729000    7481 main.go:314] 		Network: none, logging: false
I0303 05:57:40.729018    7481 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0303 05:57:40.729035    7481 main.go:316] ***************************
D0303 05:57:40.729078    7481 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-0"
D0303 05:57:40.730196    7481 container.go:592] Signal container "ci-gvisor-main-0": signal 0
D0303 05:57:40.730222    7481 sandbox.go:806] Signal sandbox "ci-gvisor-main-0"
D0303 05:57:40.730232    7481 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-0"
D0303 05:57:40.730326    7481 urpc.go:534] urpc: successfully marshalled 96 bytes.
I0303 05:57:40.978511    7481 debug.go:122] Found sandbox "ci-gvisor-main-0", PID: 5749
I0303 05:57:40.978572    7481 debug.go:131] Retrieving sandbox stacks
D0303 05:57:40.978595    7481 sandbox.go:924] Stacks sandbox "ci-gvisor-main-0"
D0303 05:57:40.978613    7481 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-0"
W0303 05:57:40.978652    7481 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 5749: connection refused
retrieving stacks: connecting to control server at PID 5749: connection refused
W0303 05:57:40.978817    7481 main.go:338] Failure to execute command, err: 1