Intermittent error "fork/exec wrapper.bat: Access is denied"

[SimonSapin]

https://community-tc.services.mozilla.com/tasks/WfMUvtlAQei2RX-NHKUNsA/runs/0/logs/https%3A%2F%2Fcommunity-tc.services.mozilla.com%2Fapi%2Fqueue%2Fv1%2Ftask%2FWfMUvtlAQei2RX-NHKUNsA%2Fruns%2F0%2Fartifacts%2Fpublic%2Flogs%2Flive.log#L94

System error executing command: fork/exec C:\Users\task_1572896809\command_000000_wrapper.bat: Access is denied.

This is with generic-worker 16.5.3.

I’ve seen the same happen a few times on taskcluster.net with generic-worker 14.1.0.

[petemoore]

Hey Simon, do you remember what the root cause was before on 14.1.0 or have a link to the previous issue? I've forgotten what the root cause was. Thanks!

[SimonSapin]

As discussed on Slack, I don’t think we ever found out. I only mentioned 14.1.0 to say this is not new with the upgrade.

[petemoore]

OK, I found a sentry report that looks related so I'll have a look into this tomorrow, to see if there is an obvious cause or not. If it is reasonably intermittent, we might need to put this issue on ice until after the migration on 9 November.