loglevel silent does not remove lerna output

Expected Behavior

I’m running a command with lerna that fails in a subpackage. I was hoping to supress lerna’s extra error output because the output from the packages themselves is enough. I ran

lerna run build-branch --parallel --loglevel=silent

Current Behavior

After the commands fail, I see error output like this

    at Promise.all.then.arr (/Users/bwain/dev/project/node_modules/execa/index.js:236:11)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:182:7)
  code: 1,
  killed: false,
  stdout: 'A TON OF CONENT'
 .....

Steps to Reproduce (for bugs)

I have a monorepo with 2 packages, each with a build-branch yarn task. At the root, I have a yarn task that says lerna run build-branch --parallel --loglevel=silent

lerna.json

{
  "lerna": "2.11.0",
  "npmClient": "yarn",
  "useWorkspaces": true,
  "version": "independent"
}

Context

The output is distracting and I would like to suppress it.

Your Environment

Executable	Version
lerna --version	2.11.0
npm --version	5.6.0
yarn --version	1.7.0
node --version	9.11.1

OS	Version
macOS High Sierra	10.13.4

[jirutka]

Okay, thanks for the advice. However, it doesn’t change anything about the issue that lerna unnecessarily duplicates the output.

[lock[bot]]

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