Perform 'yarn test' abnormal

[mzkmzk]

platform: OSX 10.10.5
node version: v8.3.0
branch: master

My order is executed

1. yarn
2. yarn install-all
3. yarn build-all
4. yarn test

but it is abnormal

 ~/Open_Source/lighthouse:  yarn test
yarn run v1.1.0
$ yarn lint --quiet && yarn unit && yarn closure && yarn test-cli-formatting
lighthouse-core tests


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  ․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
  ․․․․!․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
  ․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․!,!!!!․․․
  ․!․․․․․․․․․․․․․․․․,․․․․․․․․․․․․․․․․․․․․․․․․․․․․,,․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․․
error Command failed with exit code 7.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[paulirish]

Thanks for reporting. I can reproduce this locally, and we're seeing it on the bots as well..

[paulirish]

This exception fires during computed/screenshots-test.js:

Culprit is my recent runtime.js change.

Next: figure out why this tanks mocha so hard.