Esteban Küber e6bd6c2044 Use parenthetical notation for Fn traits ...

Always use the `Fn(T) -> R` format when printing closure traits instead of `Fn<(T,), Output = R>`.

Fix #67100:

```
error[E0277]: expected a `Fn()` closure, found `F`
 --> file.rs:6:13
  |
6 |     call_fn(f)
  |     ------- ^ expected an `Fn()` closure, found `F`
  |     |
  |     required by a bound introduced by this call
  |
  = note: wrap the `F` in a closure with no arguments: `|| { /* code */ }`
note: required by a bound in `call_fn`
 --> file.rs:1:15
  |
1 | fn call_fn<F: Fn() -> ()>(f: &F) {
  |               ^^^^^^^^^^ required by this bound in `call_fn`
help: consider further restricting this bound
  |
5 | fn call_any<F: std::any::Any + Fn()>(f: &F) {
  |                              ++++++
```

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auxiliary

make unsafe_op_in_unsafe_fn MachineApplicable and add it to 2024 compatibility

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unsafe_op_in_unsafe_fn

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access_union_field.rs

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access_union_field.stderr

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const_pat_in_layout_restricted.rs

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edition-2024-unsafe_op_in_unsafe_fn.rs

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edition-2024-unsafe_op_in_unsafe_fn.stderr

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foreign-unsafe-fn-called.rs

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foreign-unsafe-fn-called.stderr

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initializing-ranged-via-ctor.rs

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initializing-ranged-via-ctor.stderr

Use parenthetical notation for Fn traits

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inline_asm.rs

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inline_asm.stderr

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issue-3080.rs

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issue-3080.stderr

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issue-45087-unreachable-unsafe.rs

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issue-45087-unreachable-unsafe.stderr

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issue-45107-unnecessary-unsafe-in-closure.rs

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issue-45107-unnecessary-unsafe-in-closure.stderr

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issue-47412.rs

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issue-47412.stderr

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issue-85435-unsafe-op-in-let-under-unsafe-under-closure.rs

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issue-87414-query-cycle.rs

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issue-106126-good-path-bug.rs

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issue-115348-false-positive-warning-of-unnecessary-unsafe.rs

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issue-115348-false-positive-warning-of-unnecessary-unsafe.stderr

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new-unsafe-pointers.rs

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ranged_ints2_const.rs

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ranged_ints2_const.stderr

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ranged_ints2.rs

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ranged_ints2.stderr

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ranged_ints3_const.rs

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ranged_ints3_const.stderr

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ranged_ints3_match.rs

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ranged_ints3_match.stderr

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ranged_ints3.rs

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ranged_ints3.stderr

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ranged_ints4_const.rs

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ranged_ints4_const.stderr

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ranged_ints4.rs

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ranged_ints4.stderr

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ranged_ints_const.rs

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ranged_ints_const.stderr

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ranged_ints_macro.rs

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ranged_ints.rs

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ranged_ints.stderr

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ranged-ctor-as-fn-ptr.rs

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ranged-ctor-as-fn-ptr.stderr

Rename Unsafe to Safety

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union_access_through_block.rs

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union_destructure.rs

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union_wild_or_wild.rs

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union-assignop.rs

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union-assignop.stderr

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union-modification.rs

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union.rs

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union.stderr

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unsafe-around-compiler-generated-unsafe.rs

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unsafe-around-compiler-generated-unsafe.stderr

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unsafe-assign.rs

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unsafe-assign.stderr

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unsafe-block-without-braces.rs

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unsafe-block-without-braces.stderr

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unsafe-borrow.rs

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unsafe-borrow.stderr

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unsafe-const-fn.rs

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unsafe-const-fn.stderr

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unsafe-fn-assign-deref-ptr.rs

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unsafe-fn-assign-deref-ptr.stderr

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unsafe-fn-autoderef.rs

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unsafe-fn-autoderef.stderr

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unsafe-fn-called-from-safe.rs

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unsafe-fn-called-from-safe.stderr

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unsafe-fn-called-from-unsafe-blk.rs

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unsafe-fn-called-from-unsafe-fn.rs

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unsafe-fn-deref-ptr.rs

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unsafe-fn-deref-ptr.stderr

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unsafe-fn-used-as-value.rs

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unsafe-fn-used-as-value.stderr

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unsafe-not-inherited.rs

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unsafe-not-inherited.stderr

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unsafe-pointer-assignability.rs

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unsafe-subtyping.rs

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unsafe-subtyping.stderr

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unsafe-trait-impl.rs

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unsafe-trait-impl.stderr

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unsafe-unstable-const-fn.rs

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unsafe-unstable-const-fn.stderr

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