error unknown-type

What it means#

A type name in an annotation, signature or generic argument does not refer to a primitive, a declared type (data, enum, interface, alias, ...) or an imported type (§3.1, §3.4). Typos and missing imports are the usual causes.

Example#

fn main() {
  let name: Strng = "Ann"      // <- unknown-type
}

unknown-type

How to fix#

fn main() {
  let name: str = "Ann"
}

Fix the spelling or add the use that brings the type into scope.

See also#

• unresolved-name
• generic-args