Bug - Trampoline gets a 404

Description

Trampoline pipeline often fails with a 404.
This could be either trampoline related, core related or build server related.

Sometimes also another error (see attachment)

Reason

When a trampoline job is created, the direct-upload endpoint deletes all data associated with the commit hash of the job. When two trampoline jobs are started with the same commit, there is a clash in ids and the job data associated with one of the submissions is deleted.

Priority

High - The pipeline shouldn't have to be restarded 5 times before it passes.

Definition of done

When Trampoline passes mostly on the first try.