Backup fails on 8.2.0.rc1 with SKIP=uploads,builds,repositories

Dumping database ... 
Dumping PostgreSQL database gitlabhq_development ... [DONE]
done
Dumping repositories ...
[SKIPPED]
Dumping uploads ... 
[SKIPPED]
Dumping builds ... 
[SKIPPED]
Dumping artifacts ... 
done
Creating backup archive: 1448018245_gitlab_backup.tar ... tar: uploads.tar.gz: Cannot stat: No such file or directory
tar: builds.tar.gz: Cannot stat: No such file or directory
tar: Error exit delayed from previous errors.
creating archive 1448018245_gitlab_backup.tar failed
Backup failed

cc @ayufan