Providing an incorrect number of type arguments to a struct expression delivers an unhelpful error message

[emilyaherbert]

It gives this:

  --> disallow_turbofish/src/main.sw:13:1
   |
11 |   
12 |   
13 | / struct Result<T, E> {
14 | |   yes: T,
15 | |   no: E
16 | | }
   | |_^ Expected 2 type arguments, but instead found 1.
17 |   
18 |   fn main() {
   |