--- FAIL: TestDigest_FloatingTagBehindOnlyForANewerTestedDigest (0.00s)
    digest_test.go:57: newer tested digest: 1, want 2
--- FAIL: TestDigest_TheUpdateRendersTheStepsTestedDigest (0.01s)
    digest_test.go:74: the live compose does not pin the tested digest:
--- FAIL: TestDigest_SyncerRendersTheTestedDigest (0.00s)
    digest_render_test.go:36: no digest in the rendered compose:
