Joost

We actually have these crashes halfway in a single spec and we have stalling too. I tried debugging this with strace and it seems to be constantly trying to acquire...

yes, two docker instances. It might be a false fear of a clash. I'm completely unaware/ignorant of what the two docker instances do share with `--ipc=host`

Did you try the `--ipc=host` fix?

if not sandboxed, you might have multiple chrome instances fighting over resources. What is your setup? any concurrency? are you open to a different setup?

In hindsight my fix with `--ipc=host` might be related to the shared memory issue I described in https://github.com/cypress-io/cypress/issues/350 and giving the container more shared memory might resolve crashes.

Have you tried increasing the shared memory instead, like I discribe in https://github.com/cypress-io/cypress/issues/350 ?

I think you can configure it using this documentation https://docs.gitlab.com/runner/configuration/advanced-configuration.html#the-runners-docker-section