fatal error: too many address space collisions for -race mode
DIAGNOSIS:
I0314 13:30:47.887370   16628 main.go:305] ***************************
I0314 13:30:47.887531   16628 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-2]
I0314 13:30:47.887772   16628 main.go:307] Version release-20200219.0-175-g829beebf0b67
I0314 13:30:47.887901   16628 main.go:308] PID: 16628
I0314 13:30:47.888026   16628 main.go:309] UID: 0, GID: 0
I0314 13:30:47.888138   16628 main.go:310] Configuration:
I0314 13:30:47.888213   16628 main.go:311] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0314 13:30:47.888321   16628 main.go:312] 		Platform: ptrace
I0314 13:30:47.888423   16628 main.go:313] 		FileAccess: shared, overlay: false
I0314 13:30:47.888554   16628 main.go:314] 		Network: sandbox, logging: false
I0314 13:30:47.888700   16628 main.go:315] 		Strace: false, max size: 1024, syscalls: []
I0314 13:30:47.888810   16628 main.go:316] ***************************
W0314 13:30:47.888928   16628 main.go:321] Block the TERM signal. This is only safe in tests!
D0314 13:30:47.889146   16628 container.go:159] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-2"
D0314 13:30:47.896461   16628 container.go:592] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-2": signal 0
D0314 13:30:47.896698   16628 sandbox.go:814] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2"
D0314 13:30:47.896862   16628 sandbox.go:318] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-2"
D0314 13:30:47.929235   16628 urpc.go:534] urpc: successfully marshalled 117 bytes.
W0314 13:30:48.429936   16628 error.go:48] FATAL ERROR: container sandbox is not running
container sandbox is not running
W0314 13:30:48.430358   16628 main.go:338] Failure to execute command, err: 1