The harness says 'secret not readable yet' when it cannot open a consumer's
sealed credential, which is true and ordinary on the first pass. It said it
4330 times in three hours on the control machine while two consumers were
never provisioned, because a permission the host will never grant reads
exactly like a file that has not arrived.
After about a minute it says so plainly instead, once and then rarely, and
names what to look at: who owns the file and who this process runs as. The
ownership itself is the controller's to fix.
0.1.9.