error[E0109]: type arguments are not allowed on builtin type `usize`
  --> $DIR/prim-crate-partial-res.rs:5:19
   |
LL | fn foo() -> usize<()> { 0 }
   |             ----- ^^ type argument not allowed
   |             |
   |             not allowed on builtin type `usize`
   |
help: primitive type `usize` doesn't have generic parameters
   |
LL - fn foo() -> usize<()> { 0 }
LL + fn foo() -> usize { 0 }
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0109`.