greeter: Check that recent items exist

Closes #2349.
2 jobs for recent_not_found in 39 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
failed #555198
build

00:00:39

failed #555194
build

00:00:21

 
Name Stage Failure
failed
build Build There has been a runner system failure, please try again
ERROR: Preparation failed: Error: No such image: registry.gitlab.gnome.org/gnome/pitivi:master-sdk_3.34 (executor_docker.go:195:0s)
Will be retried in 3s ...
Using Docker executor with image registry.gitlab.gnome.org/gnome/pitivi:master-sdk_3.34 ...
WARNING: Container based cache volumes creation is disabled. Will not create volume for "/cache"
Authenticating with credentials from job payload (GitLab Registry)
Pulling docker image registry.gitlab.gnome.org/gnome/pitivi:master-sdk_3.34 ...
ERROR: Preparation failed: Error: No such image: registry.gitlab.gnome.org/gnome/pitivi:master-sdk_3.34 (executor_docker.go:195:0s)
Will be retried in 3s ...
ERROR: Job failed (system failure): Error: No such image: registry.gitlab.gnome.org/gnome/pitivi:master-sdk_3.34 (executor_docker.go:195:0s)