Stop travis when no exception occured

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Node.js

Continuing on my previous question Travis give error but compiles on pc, I've found a solution that works. But Travis has been terminated after 10 minutes and gives an error for that.

How can I cancel the build when there is no exception occurred?

The code into my .travis.yml file is unchanged.

install:
  - npm install
  - npm install -g bower
  - bower install bootstrap
  - bower install socket.io
language: node_js
node_js:
  - "6.9"
before_script: 
  - chmod 0777 ./backend/server.js
cache:
  directories:
    - node_modules
    - bower_components

But edit the file package.json on the marked line:

{
  "name": "watchfriends",
  "version": "0.0.0",
  "description": "Front-end and back-end project watchfriends",
  "main": "gulpfile.js",
  "scripts": {
    "test": "node ./backend/server.js" // <--
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/WatchFriends/Backend.git"
  },
  "author": "Hein P., Jasper D., Michiel V., Michiel Z.",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/WatchFriends/Backend/issues"
  },
  "homepage": "https://github.com/WatchFriends/Backend#readme",
  "devDependencies": {
    "gulp": "^3.9.1",
    "gulp-autoprefixer": "^3.1.1",
    "gulp-clean-css": "^2.0.13",
    "gulp-concat": "^2.6.1",
    "gulp-csslint": "^1.0.0",
    "gulp-htmlhint": "^0.3.1",
    "gulp-jshint": "^2.0.4",
    "gulp-notify": "^2.2.0",
    "gulp-sass": "^2.3.2",
    "gulp-sourcemaps": "^2.2.0",
    "gulp-uglify": "^2.0.0",
    "jshint-stylish": "^2.2.1"
  },
  "dependencies": {
    "socket.io": "^1.5.1"
  }
}

P.S.: the application language is Node.JS.

Thanks in advance.

What I have tried:

I've Google it but nothing found