W0601 15:11:31.773073   18435 x:0] FATAL ERROR: waiting on pid 17: waiting on PID 17 in sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3": urpc method "containerManager.WaitPID" failed: EOF
DIAGNOSIS:
I0601 15:11:31.805077     930 x:0] ***************************
I0601 15:11:31.805225     930 x:0] 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 -platform=ptrace -file-access=shared -network=sandbox debug -stacks ci-gvisor-ptrace-proxy-sandbox-race-3]
I0601 15:11:31.805308     930 x:0] Version release-20190529.1-40-g3577a4f6910f
I0601 15:11:31.805332     930 x:0] PID: 930
I0601 15:11:31.805354     930 x:0] UID: 0, GID: 0
I0601 15:11:31.805379     930 x:0] Configuration:
I0601 15:11:31.805407     930 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0601 15:11:31.805442     930 x:0] 		Platform: ptrace
I0601 15:11:31.805489     930 x:0] 		FileAccess: shared, overlay: false
I0601 15:11:31.805517     930 x:0] 		Network: sandbox, logging: false
I0601 15:11:31.805542     930 x:0] 		Strace: false, max size: 1024, syscalls: []
I0601 15:11:31.805568     930 x:0] ***************************
D0601 15:11:31.805647     930 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0601 15:11:31.814138     930 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0
D0601 15:11:31.814331     930 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0601 15:11:31.814359     930 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0601 15:11:31.814897     930 x:0] urpc: successfully marshalled 117 bytes.
I0601 15:11:31.838943     930 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3", PID: 18250
I0601 15:11:31.839034     930 x:0] Retrieving sandbox stacks
D0601 15:11:31.839065     930 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0601 15:11:31.839090     930 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
W0601 15:11:31.839157     930 x:0] FATAL ERROR: retrieving stacks: connecting to control server at PID 18250: connection refused
retrieving stacks: connecting to control server at PID 18250: connection refused