error[E0061]: this function takes 3 arguments but 4 arguments were supplied
  --> $DIR/add-tuple-within-arguments.rs:6:5
   |
LL |     foo("hi", 1, 2, "hi");
   |     ^^^
   |
note: function defined here
  --> $DIR/add-tuple-within-arguments.rs:1:4
   |
LL | fn foo(s: &str, a: (i32, i32), s2: &str) {}
   |    ^^^          -------------
help: wrap these arguments in parentheses to construct a tuple
   |
LL |     foo("hi", (1, 2), "hi");
   |               +    +

error[E0308]: mismatched types
  --> $DIR/add-tuple-within-arguments.rs:8:15
   |
LL |     bar("hi", "hi", "hi");
   |     ---       ^^^^ expected tuple, found `&str`
   |     |
   |     arguments to this function are incorrect
   |
   = note:  expected tuple `(&str,)`
           found reference `&'static str`
note: function defined here
  --> $DIR/add-tuple-within-arguments.rs:3:4
   |
LL | fn bar(s: &str, a: (&str,), s2: &str) {}
   |    ^^^          ----------
help: use a trailing comma to create a tuple with one element
   |
LL |     bar("hi", ("hi",), "hi");
   |               +    ++

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0061, E0308.
For more information about an error, try `rustc --explain E0061`.