Build Failing

[SolarAquarion]

lightdm-webkit2-material2@0.1.0 preinstall /home/solaraquarion/build/lightdm-webkit2-theme-material2-git/src/lightdm-webkit2-material2
git submodule update --init --recursive

Submodule 'LightDMMock' (https://github.com/FallingSnow/LightDMMock) registered for path 'LightDMMock'
Cloning into '/home/solaraquarion/build/lightdm-webkit2-theme-material2-git/src/lightdm-webkit2-material2/LightDMMock'...
Submodule path 'LightDMMock': checked out '12bacd3ebd5bceb25183e3220b245f0480a2f9e9'
npm WARN deprecated babel@6.23.0: In 6.x, the babel package has been deprecated in favor of babel-cli. Check https://opencollective.com/babel to support the Babel maintainers
npm WARN deprecated babel-preset-es2015@6.24.1: 🙌 Thanks for using Babel: we recommend using babel-preset-env now: please read babeljs.io/env to update!
npm WARN deprecated css-list@0.1.3: Deprecated.
npm WARN deprecated natives@1.1.3: This module relies on Node.js's internals and will break at some point. Do not use it, and update to graceful-fs@4.x.
npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated minimatch@0.2.14: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated graceful-fs@1.2.3: graceful-fs v3.0.0 and before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
npm ERR! code ERR_STREAM_WRITE_AFTER_END
npm ERR! write after end

npm ERR! A complete log of this run can be found in:
npm ERR! /home/solaraquarion/.npm/_logs/2018-05-20T19_38_17_485Z-debug.log