Error message for mismatched type parameter count repeats "parameter(s)" twice

[shepmaster]

In Rust 1.15.1 and nightly (24a70eb 2017-02-09)

fn foo<A, B>() {}

fn main() {
    foo::<u8>()
}

Produces the error:

error[E0089]: too few type parameters provided: expected 2 parameters parameters, found 1 parameter parameter
 --> src/main.rs:4:5
  |
4 |     foo::<u8>()
  |     ^^^^^^^^^ expected 2 type parameters

Specifically, my issue is with:

expected 2 parameters parameters, found 1 parameter parameter

[shepmaster]

It certainly looks like it would be coming from this bit of code, but on first read it all looks reasonable.

[shepmaster]

Oh, no E0089 is this bit. Makes more sense. Whipping up a patch.