You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
In DevelopmentKind: in v2.1.248,
In DevelopmentSection of the release
What
In print and stream-json modes, when a sandbox is required but cannot be started, the reason is only included in the visible error for trusted invocations. Otherwise you get the bare "Sandbox required but unavailable" and the detail goes to the debug log. The full reason is still written to stderr either way.
Details
Trust is decided at runtime from the entrypoint and session; there is no flag to change it.
Evidence
Sandbox required but unavailable
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
