Google launched a small update for the AMP reports in the Google Search Console yesterday where they now differentiate between critical and non-critical issues with your AMP pages. Critical issues would "prevent your page from being served with AMP-related features on Search," Google said. While the "other non-critical issues that would be good to fix," Google said.
Here is a screen shot of my report:
Here is the Google screen shot:
Forum discussion at Google+.