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error[E0605]: non-primitive cast: `&dyn Foo<i32>` as `&dyn Bar<u32>`
--> $DIR/type-checking-test-2.rs:19:13
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LL | let _ = x as &dyn Bar<u32>; // Error
| ^^^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
error[E0605]: non-primitive cast: `&dyn Foo<u32>` as `&dyn Bar<_>`
--> $DIR/type-checking-test-2.rs:24:13
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LL | let a = x as &dyn Bar<_>; // Ambiguous
| ^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0605`.
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