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error[E0038]: the trait `Bar` cannot be made into an object
--> $DIR/issue-48027.rs:6:6
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LL | impl dyn Bar {}
| ^^^^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/issue-48027.rs:2:11
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LL | trait Bar {
| --- this trait cannot be made into an object...
LL | const X: usize;
| ^ ...because it contains this associated `const`
= help: consider moving `X` to another trait
error[E0790]: cannot refer to the associated constant on trait without specifying the corresponding `impl` type
--> $DIR/issue-48027.rs:3:32
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LL | const X: usize;
| --------------- `Bar::X` defined here
LL | fn return_n(&self) -> [u8; Bar::X];
| ^^^^^^ cannot refer to the associated constant of trait
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0038, E0790.
For more information about an error, try `rustc --explain E0038`.
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