Don't start celery workers via django-admin.

2 jobs for master in 9 minutes and 43 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #182952
test

00:02:38

58.0%
 
  Deploy
failed #182953
allowed to fail manual
deploy

00:07:05

 
Name Stage Failure
failed
deploy Deploy
ok: [try.diffoscope.org]

TASK [django : celery .service file] *******************************************
fatal: [try.diffoscope.org]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'project_dir' is undefined"}

PLAY RECAP *********************************************************************
try.diffoscope.org : ok=42 changed=6 unreachable=0 failed=1 skipped=2 rescued=0 ignored=0

ERROR: Job failed: exit code 1