panic: runtime error: makeslice: len out of range

goroutine 86314 [running]:
DIAGNOSIS:
I0312 06:48:55.094410   21761 main.go:305] ***************************
I0312 06:48:55.094528   21761 main.go:306] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -alsologtostderr -platform=ptrace -file-access=shared -network=sandbox -TESTONLY-unsafe-nonroot debug -stacks --ps ci-gvisor-ptrace-proxy-sandbox-race-3]
I0312 06:48:55.094831   21761 main.go:307] Version release-20200219.0-136-g24e7005ab6bd
I0312 06:48:55.095059   21761 main.go:308] PID: 21761
I0312 06:48:55.095167   21761 main.go:309] UID: 0, GID: 0
I0312 06:48:55.095317   21761 main.go:310] Configuration:
I0312 06:48:55.095418   21761 main.go:311] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0312 06:48:55.095518   21761 main.go:312] 		Platform: ptrace
I0312 06:48:55.095618   21761 main.go:313] 		FileAccess: shared, overlay: false
I0312 06:48:55.095766   21761 main.go:314] 		Network: sandbox, logging: false
I0312 06:48:55.095858   21761 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0312 06:48:55.096002   21761 main.go:316] ***************************
W0312 06:48:55.096117   21761 main.go:321] Block the TERM signal. This is only safe in tests!
D0312 06:48:55.096348   21761 container.go:159] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0312 06:48:55.104581   21761 container.go:592] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0
D0312 06:48:55.104748   21761 sandbox.go:806] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0312 06:48:55.104846   21761 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0312 06:48:55.105276   21761 urpc.go:534] urpc: successfully marshalled 117 bytes.
W0312 06:48:55.857206   21761 error.go:48] FATAL ERROR: container sandbox is not running
container sandbox is not running
W0312 06:48:55.857580   21761 main.go:338] Failure to execute command, err: 1