1 error[E0277]: the size for values of type `(dyn A + 'static)` cannot be known at compilation time
2 --> $DIR/issue-5883.rs:7:15
4 LL | fn new_struct(r: dyn A + 'static)
5 | ^ doesn't have a size known at compile-time
7 = help: the trait `std::marker::Sized` is not implemented for `(dyn A + 'static)`
8 = note: all local variables must have a statically known size
9 = help: unsized locals are gated as an unstable feature
11 error[E0277]: the size for values of type `(dyn A + 'static)` cannot be known at compilation time
12 --> $DIR/issue-5883.rs:8:8
15 | ^^^^^^ doesn't have a size known at compile-time
18 | --------------- this returned value is of type `Struct`
20 = help: within `Struct`, the trait `std::marker::Sized` is not implemented for `(dyn A + 'static)`
21 = note: required because it appears within the type `Struct`
22 = note: the return type of a function must have a statically known size
24 error: aborting due to 2 previous errors
26 For more information about this error, try `rustc --explain E0277`.