Circle.yml fails with no helpful errors

My circle.yml is failing my build and I’m not sure why. I’ve run it through a YAML linter and am unable to see any issues. Most of this is actually copied from another circle.yml file (from another project) that works without issue.

general:
  artifacts:
    - "coverage"
machine:
  node:
    version: 5.9.1
  timezone:
    America/Los_Angeles
test:
  post:
    - npm run coverage

That looks fine at first glance. What is the exact wording of the error you are getting?

I’ve actually fixed the issue. The error was

Action failed: Configure the build

But I also missed the second part of the error above the container info, but below the build failure summary area. It was coming from an invalid package.json file.

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