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error[E0229]: associated item constraints are not allowed here
--> $DIR/issue-39259.rs:6:17
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LL | impl Fn(u32) -> u32 for S {
| ^^^ associated item constraint not allowed here
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help: parenthesized trait syntax expands to `Fn<(u32,), Output=u32>`
--> $DIR/issue-39259.rs:6:6
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LL | impl Fn(u32) -> u32 for S {
| ^^^^^^^^^^^^^^
error[E0050]: method `call` has 1 parameter but the declaration in trait `call` has 2
--> $DIR/issue-39259.rs:9:13
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LL | fn call(&self) -> u32 {
| ^^^^^ expected 2 parameters, found 1
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= note: `call` from trait: `extern "rust-call" fn(&Self, Args) -> <Self as FnOnce<Args>>::Output`
error[E0277]: expected a `FnMut(u32)` closure, found `S`
--> $DIR/issue-39259.rs:6:25
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LL | impl Fn(u32) -> u32 for S {
| ^ expected an `FnMut(u32)` closure, found `S`
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help: the trait `FnMut(u32)` is not implemented for `S`
--> $DIR/issue-39259.rs:4:1
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LL | struct S;
| ^^^^^^^^
note: required by a bound in `Fn`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0050, E0229, E0277.
For more information about an error, try `rustc --explain E0050`.
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