Multiple cron job in a queue

Created by: sudhirbitsgoa

Hi, Thanks for the great library.

Issue steps

create file: cron1.js

var Queue = require('bull');
var cronDelay = new Queue('cronDelay');
cronDelay.add({
  everysec: 'every1sec'
}, {
  delay: 100,
  repeat: {
    cron: '*/1 * * * * *'
  }
}).catch(err => console.log(err))

cronDelay.process(5, (job, done) => {
  console.log('%j', job.data);
  done()
});

this will create a job cronDelay and adds a cron job of every 5 secs

create file cron2.js

var Queue = require('bull');
var cronDelay = new Queue('cronDelay');
cronDelay.add({
  everysec: 'every5sec'
}, {
  delay: 100,
  repeat: {
    cron: '*/5 * * * * *'
  }
}).catch(err => console.log(err))

cronDelay.process(5, (job, done) => {
  console.log('%j', job.data);
  done()
});

This will add cron job of every 5 sec to the same queue

Issue: when i run

node cron1.js 

it keeps printing

{"everysec":"every1sec"}
{"everysec":"every1sec"}
{"everysec":"every1sec"}
{"everysec":"every1sec"}
{"everysec":"every1sec"}

Now in other terminal run

node cron2.js

It just prints

{"everysec":"every5sec"}

for one time and both the jobs are stopped from then.

Any clue what is wrong.