79 lines
3.0 KiB
Plaintext
79 lines
3.0 KiB
Plaintext
error[E0277]: the trait bound `dyn Setup<From = T>: Setup` is not satisfied
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--> $DIR/object-unsafety.rs:12:12
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^ the trait `Setup` is not implemented for `dyn Setup<From = T>`
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note: required by a bound in `copy`
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--> $DIR/object-unsafety.rs:7:12
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LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From {
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| ^^^^^ required by this bound in `copy`
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help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
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LL | pub fn copy_any<T>(t: &T) -> T where dyn Setup<From = T>: Setup {
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| ++++++++++++++++++++++++++++++++
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error: the type `&<dyn Setup<From = T> as Setup>::From` is not well-formed
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--> $DIR/object-unsafety.rs:12:31
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LL | copy::<dyn Setup<From=T>>(t)
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| ^
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error[E0308]: mismatched types
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--> $DIR/object-unsafety.rs:12:31
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LL | copy::<dyn Setup<From=T>>(t)
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| ------------------------- ^ types differ
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| |
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| arguments to this function are incorrect
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= note: expected reference `&<dyn Setup<From = T> as Setup>::From`
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found reference `&T`
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note: function defined here
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--> $DIR/object-unsafety.rs:7:4
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LL | fn copy<U: Setup + ?Sized>(from: &U::From) -> U::From {
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| ^^^^ --------------
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error[E0308]: mismatched types
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--> $DIR/object-unsafety.rs:12:5
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LL | pub fn copy_any<T>(t: &T) -> T {
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| - - expected `T` because of return type
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| |
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| this type parameter
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ
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= note: expected type parameter `T`
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found associated type `<dyn Setup<From = T> as Setup>::From`
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= note: you might be missing a type parameter or trait bound
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error: the type `<dyn Setup<From = T> as Setup>::From` is not well-formed
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--> $DIR/object-unsafety.rs:12:5
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error[E0277]: the size for values of type `<dyn Setup<From = T> as Setup>::From` cannot be known at compilation time
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--> $DIR/object-unsafety.rs:12:5
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LL | copy::<dyn Setup<From=T>>(t)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^---
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| |
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| doesn't have a size known at compile-time
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| this returned value is of type `<dyn Setup<From = T> as Setup>::From`
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= help: the trait `Sized` is not implemented for `<dyn Setup<From = T> as Setup>::From`
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= note: the return type of a function must have a statically known size
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help: consider further restricting the associated type
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LL | pub fn copy_any<T>(t: &T) -> T where <dyn Setup<From = T> as Setup>::From: Sized {
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| +++++++++++++++++++++++++++++++++++++++++++++++++
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error: aborting due to 6 previous errors
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Some errors have detailed explanations: E0277, E0308.
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For more information about an error, try `rustc --explain E0277`.
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