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error: trait objects without an explicit `dyn` are deprecated
--> $DIR/bare-trait-dont-suggest-dyn.rs:6:33
|
LL | fn ord_prefer_dot(s: String) -> Ord {
| ^^^
|
= 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: the lint level is defined here
--> $DIR/bare-trait-dont-suggest-dyn.rs:5:9
|
LL | #![deny(bare_trait_objects)]
| ^^^^^^^^^^^^^^^^^^
help: if this is a dyn-compatible trait, use `dyn`
|
LL | fn ord_prefer_dot(s: String) -> dyn Ord {
| +++
error[E0038]: the trait `Ord` is not dyn compatible
--> $DIR/bare-trait-dont-suggest-dyn.rs:6:33
|
LL | fn ord_prefer_dot(s: String) -> Ord {
| ^^^ `Ord` is not dyn compatible
|
note: for a trait to be dyn compatible it needs to allow building a vtable
for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility>
--> $SRC_DIR/core/src/cmp.rs:LL:COL
|
= note: the trait is not dyn compatible because it uses `Self` as a type parameter
::: $SRC_DIR/core/src/cmp.rs:LL:COL
|
= note: the trait is not dyn compatible because it uses `Self` as a type parameter
help: consider using an opaque type instead
|
LL | fn ord_prefer_dot(s: String) -> impl Ord {
| ++++
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0038`.
|
