[iOS only] Negative duration for some test executions

[msd117c]

Describe the bug
For a given (iOS) test, the test runner is writing a (huge) negative duration in the influxDB bucket we use for Marathon.

These durations belong to the same test.

To Reproduce
It is hard to reproduce the issue because the data comes from executions during development and it is not the only one reporting data for that time window, making it harder to locate the logs.

Expected behavior
I would expect a positive test duration or 0 if something unexpected happened, though that would introduce noise in the metrics (less than actual noise with that negative value though).

Logs and reports
I can't access the logs but the test was reported as not successful to the influxDB instance (so I guess we can expect a greater than 0 duration).

Devices (please complete the following information):

• Device: iPhone 16
• OS: iOS 18

Additional context
I will try to manually reproduce the issue to have access to the logs. This only happened with an iOS setup (afaik Android never had this issue).

[Malinskiy]

The huge negative value is a negative unix epoch in milliseconds. duration = end - begin, so a huge negative value means that some specific test didn't report an end value.
Without a reproducer, it's hard to debug such an issue. I'm happy to review a PR with a fix as well if you can't provide a reproducer.

Thanks!

[msd117c]

@Malinskiy I opened a draft PR trying to address the issue here. Let me know if you think that could solve the issue. I will try to reproduce the issue locally when possible and try the branch build to compare.