Auto merge of #135576 - matthiaskrgr:rollup-e38vft0, r=matthiaskrgr #54779

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10 errors

associated constant `Z` not found for `Foo`

associated type `Z` not found for `Foo`

associated constant `Z` not found for `Foo`

associated type `F` not found for `Trait`

the value of the associated type `Bar` in `Trait` must be specified

associated function in `impl` without body

method `foo` is not a member of trait `Fn`

manual implementations of `Fn` are experimental

associated item constraints are not allowed here

expected a `FnMut(&isize)` closure, found `Error`