Promise.all Chaining Bug?

promise-all-bug.js

class Foo {

  async run() {

    setTimeout(() => {
      console.log('long wait');
    }, 5000);

    this.start()
      .then(() => {
        console.log('promise.all block (counting)');
        // @todo why aren't these promises called?
        let promises = [];
        for (let i in 3) {
          promises.push(this.count.call(this, i));
        }
        return Promise.all(promises);
      })
      .then(() => {
        console.log('promise inline block');
        return new Promise((resolve, reject) => {
          setTimeout(() => {
            console.log('\tinline promise resolved');
            resolve(true);
          }, 1000);
        });
      })
      .catch(this.fail.bind(this))
      .finally(this.stop.bind(this));
  }

  async start() {
    console.log('start');
  }

  async count(num) {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        console.log('count', num);
        resolve(true);
      }, 1000);
    });
  }

  async stop() {
    console.log('stop');
  }

  async fail(err) {
    console.error('fail', err);
    process.exit(1);
  }

}

// init
const foo = new Foo();
foo.run();