<upstream> against a fresh copy of the sandbox linked to it and scores each answer: the status, then every scalar leaf of the body. Prints one line per endpoint, the three fields that failed most often with the source the sandbox used for each, and the total. See Truthfulness for the scoring rule.
<upstream>, or the sandbox with the same name. Fields listed under the upstream’s volatile_fields are scored on shape only. Works offline; nothing is written.
Exits
0 after printing, whatever the number. Exits 2 with the way to get recordings when there are none for <upstream>, and when no sandbox is linked to it.