E0320
Untrusted<T> where T is not text, such as Untrusted<Int>, Untrusted<List<String>>, or Untrusted<T> for a generic T. Trust is a flag on text only; every other type is trusted. Text inside a container is written inside it, as in List<Untrusted<String>>. Checked in signatures, declarations, and type annotations in bodies. Spans the Untrusted<...> type.
Machine-applicable fix: none.
Example
This program fails with E0320.
fn count(n: Untrusted<Int>) {}
Fixed
The same program, fixed.
fn count(n: Int) {}
Listed in the checker notes. oskac explain E0320 prints this entry offline.