gitlab: report server errors without trying to deserialize
When GitLab has a server-side error it likely has not sent a well-formed JSON object. Report the server error directly.
A GitLab update will be applied on May 9th, between 8am and 10am, EDT (UTC-04:00). This site may have intermittent delays during that time.
When GitLab has a server-side error it likely has not sent a well-formed JSON object. Report the server error directly.