Compound test coverage reported incorrectly sometimes

It appears that compound test coverage is not being merged correctly sometimes.

Example - https://gitlab.com/gitlab-org/gitlab-ce/builds/3286716

Despite the fact this job downloads artifacts from previous builds, only one job is taken into account:

Coverage report generated for rspec 5 20 to /builds/gitlab-org/gitlab-ce/coverage. 11285 / 46413 LOC (24.31%) covered.

Changed title: Compound test coverage reported incorrectly sometime → Compound test coverage reported incorrectly sometimes

Reassigned to @grzesiek

mentioned in merge request !5932 (merged)

Status changed to closed by merge request !5932 (merged)

mentioned in commit tnir/gitlab-ce@f41098ad

mentioned in commit 0d83b55e

mentioned in merge request !14785