pub fn forbid_waiting_diagnostics()Expand description
From now on, in this process and every process it forks, a diagnostic that
asks diagnostics_must_not_wait is written once with
write_without_waiting and omitted when stderr cannot take it at once,
and crate::util::RetryingStderr never waits inside write(2).
Only hermit’s main calls this, when --max-log-bytes is given.