error[E0061]: this function takes 2 arguments but 1 argument was supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:24:9
   |
LL |         <Self>::$method(8)
   |         ^^^^^^^^^^^^^^^--- argument #2 of type `u8` is missing
...
LL |         delegate_local!(foo);
   |         -------------------- in this macro invocation
   |
note: associated function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:39:8
   |
LL |     fn foo(a: u8, b: u8) {}
   |        ^^^        -----
   = note: this error originates in the macro `delegate_local` (in Nightly builds, run with -Z macro-backtrace for more info)
help: provide the argument
   |
LL |         <Self>::$method(8, /* u8 */)
   |                          ++++++++++

error[E0061]: this function takes 2 arguments but 1 argument was supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:43:9
   |
LL |         delegate!(foo);
   |         ^^^^^^^^^^^^^^ argument #2 of type `u8` is missing
   |
note: associated function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:39:8
   |
LL |     fn foo(a: u8, b: u8) {}
   |        ^^^        -----
   = note: this error originates in the macro `delegate` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0061]: this function takes 2 arguments but 1 argument was supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:31:9
   |
LL |         <$from>::$method(8)
   |         ^^^^^^^^^^^^^^^^--- argument #2 of type `u8` is missing
...
LL |         delegate_from!(Bar, foo);
   |         ------------------------ in this macro invocation
   |
note: associated function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:39:8
   |
LL |     fn foo(a: u8, b: u8) {}
   |        ^^^        -----
   = note: this error originates in the macro `delegate_from` (in Nightly builds, run with -Z macro-backtrace for more info)
help: provide the argument
   |
LL |         <$from>::$method(8, /* u8 */)
   |                           ++++++++++

error[E0061]: this function takes 4 arguments but 3 arguments were supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:52:5
   |
LL |     foo(1, 2, 3);
   |     ^^^--------- argument #4 of type `isize` is missing
   |
note: function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:9:4
   |
LL | fn foo(a: isize, b: isize, c: isize, d: isize) {
   |    ^^^                               --------
help: provide the argument
   |
LL |     foo(1, 2, 3, /* isize */);
   |                +++++++++++++

error[E0061]: this function takes 6 arguments but 3 arguments were supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:54:5
   |
LL |     bar(1, 2, 3);
   |     ^^^--------- three arguments of type `i32`, `i32`, and `i32` are missing
   |
note: function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:13:4
   |
LL | fn bar(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32) {
   |    ^^^                         ------  ------  ------
help: provide the arguments
   |
LL |     bar(1, 2, 3, /* i32 */, /* i32 */, /* i32 */);
   |                +++++++++++++++++++++++++++++++++

error[E0061]: this function takes 6 arguments but 5 arguments were supplied
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:58:5
   |
LL |     function_with_lots_of_arguments(
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL |         variable_name,
LL |         variable_name,
   |         ------------- argument #2 of type `char` is missing
   |
note: function defined here
  --> $DIR/fn-arg-count-mismatch-diagnostics.rs:49:4
   |
LL | fn function_with_lots_of_arguments(a: i32, b: char, c: i32, d: i32, e: i32, f: i32) {}
   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^         -------
help: provide the argument
   |
LL |     function_with_lots_of_arguments(
LL |         variable_name,
LL ~         /* char */,
LL ~         variable_name,
   |

error: aborting due to 6 previous errors

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