Yarn: Yarn 1.6.0 prints deprecation warning using node 10 rc

[SimenB]

Do you want to request a feature or report a bug?

Bug, I suppose

What is the current behavior?

$ NODE_OPTIONS=--trace-warnings yarn
yarn install v1.6.0
warning You are using Node "10.0.0-rc.0" which is not supported and may encounter bugs or unexpected behavior. Yarn supports the following semver range: "^4.8.0 || ^5.7.0 || ^6.2.2 || >=8.0.0"
(node:72741) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
    at showFlaggedDeprecation (buffer.js:159:11)
    at new Buffer (buffer.js:174:3)
    at Object.<anonymous> (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:146012:18)
    at __webpack_require__ (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:22:30)
    at Object.<anonymous> (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:76874:16)
    at __webpack_require__ (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:22:30)
    at Object.module.exports.gf (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:45967:11)
    at __webpack_require__ (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:22:30)
    at Object.module.exports.Object.defineProperty.value (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:41400:11)
    at __webpack_require__ (/usr/local/Cellar/yarn/1.6.0/libexec/lib/cli.js:22:30)

Comes from tar-stream: https://github.com/mafintosh/tar-stream/blob/d38b9661d28923e7c31b47c1c012ff8ffb46ecb5/pack.js#L14

See https://github.com/mafintosh/tar-stream/issues/79

If the current behavior is a bug, please provide the steps to reproduce.

What is the expected behavior?
No warning, although I'm not sure if there's anything you can do in yarn (beyond changing out the dep)

Please mention your node.js, yarn and operating system version.
node 10.0.0-rc.0, yarn 1.6.0, macOS

[malonehedges]

Duplicate of #5477 ?

[felixrabe]

As a workaround for now, I've created a ~/bin/node script that comes before (Homebrew-installed) /usr/local/bin/node in my $PATH:

#!/bin/bash

/usr/local/bin/node --no-deprecation "$@"