1 error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
2 --> $DIR/feature-gate-unsized_fn_params.rs:17:8
4 LL | fn foo(x: dyn Foo) {
5 | ^ doesn't have a size known at compile-time
7 = help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
8 = help: unsized fn params are gated as an unstable feature
9 help: function arguments must have a statically known size, borrowed types always have a known size
11 LL | fn foo(x: &dyn Foo) {
14 error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
15 --> $DIR/feature-gate-unsized_fn_params.rs:24:9
18 | ^^ doesn't have a size known at compile-time
20 = help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
21 = note: all function arguments must have a statically known size
22 = help: unsized fn params are gated as an unstable feature
24 error: aborting due to 2 previous errors
26 For more information about this error, try `rustc --explain E0277`.