What's wrong with this use of async await?

I am trying to download tracks via the soundcloud API, and then launch a callback once an indeterminant amount of tracks is downloaded. When I run the below code, I see "All done" being console logged before anything else, even though I intend for it to be the last thing... What am I doing wrong?

// Deps
import fs from 'fs'
import SC from 'node-soundcloud'
import request from 'request'

// Write mp3 function
function writeMP3(track) {
  return new Promise((resolve, reject) => {

    console.log('Starting download: ', track.title)

    request.get(track.download_url)
    .on('error', err => {
      // reject('Download error: ', err)
    })
    .on('finish', () => {
      () => resolve('Download complete')
    })
    .pipe(fs.createWriteStream(`./data/temp/${track.title}_${track.user.username}.mp3`))

  })
}

async function asyncTrackFetch(track) {
  return await writeMP3(track)
}

// Array of promises to callback upon
const trackActions = []

SC.init({
  id: 'MY_ID',
  secret: 'MY_SECRET'
})

SC.get('/tracks', (err, tracks) => {

  if (err) {
    throw new Error(err)
  } else {

    console.log('Tracks fetched: ', tracks.length)

    tracks.map(track => {

      if (track.downloadable) {
        console.log('downloadable')

        trackActions.push(asyncTrackFetch(track))

      }

    })
  }
})

// Perform requests async
Promise.all(trackActions).then(() => {
  console.log('All done')
  console.log(fs.readdirSync('./data/temp'))
})

via John Doe