error[E0061]: this function takes 1 argument but 2 arguments were supplied
  --> $DIR/issue-4935.rs:5:13
   |
LL | fn main() { foo(5, 6) }
   |             ^^^  ---
   |                  | |
   |                  | unexpected argument of type `{integer}`
   |                  help: remove the extra argument
   |
note: function defined here
  --> $DIR/issue-4935.rs:3:4
   |
LL | fn foo(a: usize) {}
   |    ^^^ --------

error: aborting due to previous error

For more information about this error, try `rustc --explain E0061`.