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error[E0308]: mismatched types
  --> $DIR/overloaded-calls-bad.rs:33:17
   |
LL |     let ans = s("what");
   |               - ^^^^^^ expected `isize`, found `&str`
   |               |
   |               arguments to this function are incorrect
   |
note: implementation defined here
  --> $DIR/overloaded-calls-bad.rs:10:1
   |
LL | impl FnMut<(isize,)> for S {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0057]: this function takes 1 argument but 0 arguments were supplied
  --> $DIR/overloaded-calls-bad.rs:35:15
   |
LL |     let ans = s();
   |               ^-- an argument of type `isize` is missing
   |
note: implementation defined here
  --> $DIR/overloaded-calls-bad.rs:10:1
   |
LL | impl FnMut<(isize,)> for S {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
help: provide the argument
   |
LL |     let ans = s(/* isize */);
   |                ~~~~~~~~~~~~~

error[E0057]: this function takes 1 argument but 2 arguments were supplied
  --> $DIR/overloaded-calls-bad.rs:37:15
   |
LL |     let ans = s("burma", "shave");
   |               ^ -------  ------- unexpected argument of type `&'static str`
   |                 |
   |                 expected `isize`, found `&str`
   |
note: implementation defined here
  --> $DIR/overloaded-calls-bad.rs:10:1
   |
LL | impl FnMut<(isize,)> for S {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
help: remove the extra argument
   |
LL -     let ans = s("burma", "shave");
LL +     let ans = s(/* isize */);
   |

error[E0308]: mismatched types
  --> $DIR/overloaded-calls-bad.rs:40:7
   |
LL |     F("");
   |     - ^^ expected `i32`, found `&str`
   |     |
   |     arguments to this struct are incorrect
   |
note: implementation defined here
  --> $DIR/overloaded-calls-bad.rs:25:1
   |
LL | impl FnOnce<(i32,)> for F {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0057, E0308.
For more information about an error, try `rustc --explain E0057`.