Do somebody experience an issue with shared GitLab Runners right now?

There has been a runner system failure, please try again

It’s the only message I see. Any job fails at the Preparing environment step. Right after pulling a base docker image for the step.

ERROR: Job failed (system failure): prepare environment: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "process_linux.go:402: container init caused \"setenv: invalid argument\"": unknown (docker.go:810:0s). Check for more information

It happens for about an hour for me already.

The problem was with one of my CI environment variables.
Not a GitLab shared runner problem.