fatal error: out of memory
DIAGNOSIS:
I0312 03:53:06.397147    4851 main.go:305] ***************************
I0312 03:53:06.397217    4851 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-1]
I0312 03:53:06.397259    4851 main.go:307] Version release-20200219.0-136-g24e7005ab6bd
I0312 03:53:06.397297    4851 main.go:308] PID: 4851
I0312 03:53:06.397331    4851 main.go:309] UID: 0, GID: 0
I0312 03:53:06.397364    4851 main.go:310] Configuration:
I0312 03:53:06.397390    4851 main.go:311] 		RootDir: /syzkaller/managers/main/workdir/gvisor_root
I0312 03:53:06.397421    4851 main.go:312] 		Platform: ptrace
I0312 03:53:06.397446    4851 main.go:313] 		FileAccess: shared, overlay: false
I0312 03:53:06.397485    4851 main.go:314] 		Network: none, logging: false
I0312 03:53:06.397515    4851 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0312 03:53:06.397541    4851 main.go:316] ***************************
D0312 03:53:06.397627    4851 container.go:159] Load container "/syzkaller/managers/main/workdir/gvisor_root" "ci-gvisor-main-1"
D0312 03:53:06.399172    4851 container.go:592] Signal container "ci-gvisor-main-1": signal 0
D0312 03:53:06.399212    4851 sandbox.go:806] Signal sandbox "ci-gvisor-main-1"
D0312 03:53:06.399235    4851 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-1"
D0312 03:53:06.399382    4851 urpc.go:534] urpc: successfully marshalled 96 bytes.
I0312 03:53:06.762222    4851 debug.go:128] Found sandbox "ci-gvisor-main-1", PID: 64044
I0312 03:53:06.762292    4851 debug.go:137] Retrieving sandbox stacks
D0312 03:53:06.762330    4851 sandbox.go:924] Stacks sandbox "ci-gvisor-main-1"
D0312 03:53:06.762345    4851 sandbox.go:318] Connecting to sandbox "ci-gvisor-main-1"
W0312 03:53:06.762379    4851 error.go:48] FATAL ERROR: retrieving stacks: connecting to control server at PID 64044: connection refused
retrieving stacks: connecting to control server at PID 64044: connection refused
W0312 03:53:06.762504    4851 main.go:338] Failure to execute command, err: 1