function fetchFromBuildBot (build, buildPath) {

  logger.verbose('Downloading build from buildbot')

  let FtpFilePath = path.join(buildPath, build.file)

  Promise.using(getFtpClient(), ftp => {
    return new Promise((resolve, reject) => {
      ftp.on('ready', () => {
        ftp.get(FtpFilePath, (err, ftpStream) => {
          if (err) return reject(err)

          ftpStream.once('error', reject)

          let saveFolder = path.join(buildSaveLocation, build.pn)

          mkdirp(saveFolder, null)
            .then(() => {
              let fullPath = path.join(saveFolder, build._id.toString())
              logger.info('Saving build to %s', fullPath)

              let writeStream = fs.createWriteStream(fullPath)
              writeStream.once('error', reject)

              ftpStream.once('close', () => {
                fs.statAsync(fullPath).then(stats => resolve(stats.size))
              })
              ftpStream.pipe(writeStream)
            })
            .then(stats => resolve(stats.size))
            .catch(reject)
        })
      })

      ftp.connect({host: 'buildmachine', port: 1021, user: 'sarbakaninc/buildbot', password: '12345678'})
    })
  })
}

function getFtpClient () {
  return Promise.resolve(new FTPClient())
    .disposer(ftp => {
      logger.info('Closing FTP')
      ftp.end()
    })
}