Echidna hides error reports from spec-generator

[plehegar]

Echidna reports things like:

"retrieve-resources": {
  "status": "error",
  "errors": [
    "Error: Fetching http://cerberus.w3.org:8082/?type=respec&url=http%3A%2F%2Fw3c.github.io%2Fmanifest%2Findex.html%3FspecStatus%3DWD%3BshortName%3Dappmanifest triggered and HTTP error: code 500"
  ]
},

https://lists.w3.org/Archives/Public/public-tr-notifications/2015Apr/0058.html

However, spec-generator does fail with an error report:

{"error":"Error: stdout maxBuffer exceeded.\nLoading http://w3c.github.io/manifest/index.html?publishDate=2015-04-28\n"}

https://labs.w3.org/spec-generator/?type=respec&url=http%3A%2F%2Fw3c.github.io%2Fmanifest%2Findex.html

Is it possible for echidna to carry over the error report?

[tripu]

(Edited description to improve legibility.)