yarn outdated --json returns bad formatted JSON

[goldmont]

Bug description

yarn outdated --json

What is the current behavior?

Sometimes yarn outdated returns a bad formatted JSON.

{"type":"info","data":"Color legend : \n \"<red>\"    : Major Update backward-incompatible updates \n \"<yellow>\" : Minor Update backward-compatible features \n \"<green>\"  : Patch Update backward-compatible bug fixes"}
"css-loader","3.5.1","3.5.1","3.5.3","devDependencies","https://github.com/webpack-contrib/css-loader"],["jest","25.5.3","25.5.3","25.5.4","devDependencies","https://jestjs.io/"],["purgecss","2.1.0","2.1.0","2.1.2","devDependencies","https://purgecss.com"],["style-loader","1.1.3","1.1.3","1.2.1","devDependencies","https://github.com/webpack-contrib/style-loader"]]}}

Steps to Reproduce

1. yarn outdated --json
2. Parse

Environment

• Node Version: 12
• Yarn v1 Version: v1.22.4
• OS and version: node:12 Docker Image

[goldmont]

Any news?