error[E0631]: type mismatch in closure arguments
  --> $DIR/closure-arg-type-mismatch.rs:3:14
   |
LL |     a.iter().map(|_: (u32, u32)| 45);
   |              ^^^ ------------------ found signature of `fn((u32, u32)) -> _`
   |              |
   |              expected signature of `fn(&(u32, u32)) -> _`
   |
note: required by a bound in `map`
  --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
   |
LL |         F: FnMut(Self::Item) -> B,
   |            ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `map`

error[E0631]: type mismatch in closure arguments
  --> $DIR/closure-arg-type-mismatch.rs:4:14
   |
LL |     a.iter().map(|_: &(u16, u16)| 45);
   |              ^^^ ------------------- found signature of `for<'r> fn(&'r (u16, u16)) -> _`
   |              |
   |              expected signature of `fn(&(u32, u32)) -> _`
   |
note: required by a bound in `map`
  --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
   |
LL |         F: FnMut(Self::Item) -> B,
   |            ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `map`

error[E0631]: type mismatch in closure arguments
  --> $DIR/closure-arg-type-mismatch.rs:5:14
   |
LL |     a.iter().map(|_: (u16, u16)| 45);
   |              ^^^ ------------------ found signature of `fn((u16, u16)) -> _`
   |              |
   |              expected signature of `fn(&(u32, u32)) -> _`
   |
note: required by a bound in `map`
  --> $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
   |
LL |         F: FnMut(Self::Item) -> B,
   |            ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `map`

error[E0308]: mismatched types
  --> $DIR/closure-arg-type-mismatch.rs:10:5
   |
LL |     baz(f);
   |     ^^^ lifetime mismatch
   |
   = note: expected type `for<'r> Fn<(*mut &'r u32,)>`
              found type `Fn<(*mut &'a u32,)>`
note: the required lifetime does not necessarily outlive the lifetime `'a` as defined here
  --> $DIR/closure-arg-type-mismatch.rs:9:10
   |
LL | fn _test<'a>(f: fn(*mut &'a u32)) {
   |          ^^
note: the lifetime requirement is introduced here
  --> $DIR/closure-arg-type-mismatch.rs:8:11
   |
LL | fn baz<F: Fn(*mut &u32)>(_: F) {}
   |           ^^^^^^^^^^^^^

error: implementation of `FnOnce` is not general enough
  --> $DIR/closure-arg-type-mismatch.rs:10:5
   |
LL |     baz(f);
   |     ^^^ implementation of `FnOnce` is not general enough
   |
   = note: `fn(*mut &'a u32)` must implement `FnOnce<(*mut &'0 u32,)>`, for any lifetime `'0`...
   = note: ...but it actually implements `FnOnce<(*mut &'a u32,)>`

error[E0308]: mismatched types
  --> $DIR/closure-arg-type-mismatch.rs:10:5
   |
LL |     baz(f);
   |     ^^^ lifetime mismatch
   |
   = note: expected type `for<'r> Fn<(*mut &'r u32,)>`
              found type `Fn<(*mut &'a u32,)>`
note: the lifetime `'a` as defined here doesn't meet the lifetime requirements
  --> $DIR/closure-arg-type-mismatch.rs:9:10
   |
LL | fn _test<'a>(f: fn(*mut &'a u32)) {
   |          ^^
note: the lifetime requirement is introduced here
  --> $DIR/closure-arg-type-mismatch.rs:8:11
   |
LL | fn baz<F: Fn(*mut &u32)>(_: F) {}
   |           ^^^^^^^^^^^^^

error: implementation of `FnOnce` is not general enough
  --> $DIR/closure-arg-type-mismatch.rs:10:5
   |
LL |     baz(f);
   |     ^^^ implementation of `FnOnce` is not general enough
   |
   = note: `fn(*mut &'a u32)` must implement `FnOnce<(*mut &'0 u32,)>`, for any lifetime `'0`...
   = note: ...but it actually implements `FnOnce<(*mut &'a u32,)>`

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0308, E0631.
For more information about an error, try `rustc --explain E0308`.