Testing database connection fails strapi new script

[crtl]

Informations

vagrant@strapi:/var/www$ strapi new strapi-app
🚀 Start creating your Strapi application. It might take a minute, please take a coffee ☕️

Lets configurate the connection to your database:
? Choose your main database: Postgres
? Database name: (strapi-app)

vagrant@strapi:/var/www$ strapi new strapi-app
🚀 Start creating your Strapi application. It might take a minute, please take a coffee ☕️

Lets configurate the connection to your database:
? Choose your main database: MySQL
? Database name: strapi_app
? Host: localhost
? Port: 3306
? Username: root
? Password: ****

⏳ Testing database connection...
{ Error: Command failed: npm install --production --ignore-scripts
npm WARN deprecated postcss-cssnext@2.11.0: 'postcss-cssnext' has been deprecated in favor of 'postcss-preset-env'. Read more at https://moox.io/blog/deprecating-cssnext/
npm WARN deprecated bfj-node4@5.3.1: Switch to the `bfj` package for fixes and new features!
npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN rollback Rolling back concat-map@0.0.1 failed (this is probably harmless): ETXTBSY: text file is busy, unlink '/var/www/strapi-app/admin/node_modules/concat-map/package.json.725371697'
npm WARN rollback Rolling back brace-expansion@1.1.11 failed (this is probably harmless): ETXTBSY: text file is busy, unlink '/var/www/strapi-app/admin/node_modules/brace-expansion/package.json.3709003424'
npm WARN rollback Rolling back balanced-match@1.0.0 failed (this is probably harmless): ETXTBSY: text file is busy, unlink '/var/www/strapi-app/admin/node_modules/balanced-match/package.json.3008887935'
npm WARN rollback Rolling back fs.realpath@1.0.0 failed (t

• Node.js version: 8.9.4|10.10.0
• npm version: 6.4.1
• Strapi version: 3.0.0-alpha.14.1
• Database: MySQL
• Operating system: Ubuntu 17.10

What is the current behavior?
Cannot create a new app

Steps to reproduce the problem

1. strapi new app-name
2. Select MySQL as Database
3. Wait

What is the expected behavior?
Strapi should successfully establish a connection to the running database server.

[crtl]

Because I was running node on vagrant in a shared folder I had to use another directory (this is an node issue).
After moving to another directory which is not shared the installation worked better.