| warning: trait objects without an explicit `dyn` are deprecated |
| --> $DIR/not-on-bare-trait.rs:7:12 |
| | |
| LL | fn foo(_x: Foo + Send) { |
| | ^^^^^^^^^^ |
| | |
| = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! |
| = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> |
| = note: `#[warn(bare_trait_objects)]` on by default |
| help: use `dyn` |
| | |
| LL | fn foo(_x: dyn Foo + Send) { |
| | +++ |
| |
| error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time |
| --> $DIR/not-on-bare-trait.rs:7:8 |
| | |
| LL | fn foo(_x: Foo + Send) { |
| | ^^ doesn't have a size known at compile-time |
| | |
| = help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)` |
| = help: unsized fn params are gated as an unstable feature |
| help: you can use `impl Trait` as the argument type |
| | |
| LL | fn foo(_x: impl Foo + Send) { |
| | ++++ |
| help: function arguments must have a statically known size, borrowed types always have a known size |
| | |
| LL | fn foo(_x: &(dyn Foo + Send)) { |
| | +++++ + |
| |
| error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time |
| --> $DIR/not-on-bare-trait.rs:12:8 |
| | |
| LL | fn bar(_x: (dyn Foo + Send)) { |
| | ^^ doesn't have a size known at compile-time |
| | |
| = help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)` |
| = help: unsized fn params are gated as an unstable feature |
| help: you can use `impl Trait` as the argument type |
| | |
| LL | fn bar(_x: (impl Foo + Send)) { |
| | ~~~~ |
| help: function arguments must have a statically known size, borrowed types always have a known size |
| | |
| LL | fn bar(_x: (&(dyn Foo + Send))) { |
| | ++ + |
| |
| error: aborting due to 2 previous errors; 1 warning emitted |
| |
| For more information about this error, try `rustc --explain E0277`. |
