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error[E0038]: the trait `FromResidual` cannot be made into an object
--> $DIR/canonicalize-fresh-infer-vars-issue-103626.rs:10:17
|
LL | let b: &dyn FromResidual = &();
| ^^^^^^^^^^^^
|
= note: it cannot use `Self` as a type parameter in a supertrait or `where`-clause
error[E0038]: the trait `FromResidual` cannot be made into an object
--> $DIR/canonicalize-fresh-infer-vars-issue-103626.rs:10:32
|
LL | let b: &dyn FromResidual = &();
| ^^^ `FromResidual` cannot be made into an object
|
note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/canonicalize-fresh-infer-vars-issue-103626.rs:2:8
|
LL | trait FromResidual<R = <Self as Try>::Residual> {
| ------------ this trait cannot be made into an object...
LL | fn from_residual(residual: R) -> Self;
| ^^^^^^^^^^^^^ ...because associated function `from_residual` has no `self` parameter
= note: required for the cast from `&()` to `&dyn FromResidual<{type error}>`
help: consider turning `from_residual` into a method by giving it a `&self` argument
|
LL | fn from_residual(&self, residual: R) -> Self;
| ++++++
help: alternatively, consider constraining `from_residual` so it does not apply to trait objects
|
LL | fn from_residual(residual: R) -> Self where Self: Sized;
| +++++++++++++++++
error[E0038]: the trait `FromResidual` cannot be made into an object
--> $DIR/canonicalize-fresh-infer-vars-issue-103626.rs:10:12
|
LL | let b: &dyn FromResidual = &();
| ^^^^^^^^^^^^^^^^^ `FromResidual` cannot be made into an object
|
note: for a trait to be "dyn-compatible" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/canonicalize-fresh-infer-vars-issue-103626.rs:2:8
|
LL | trait FromResidual<R = <Self as Try>::Residual> {
| ------------ this trait cannot be made into an object...
LL | fn from_residual(residual: R) -> Self;
| ^^^^^^^^^^^^^ ...because associated function `from_residual` has no `self` parameter
help: consider turning `from_residual` into a method by giving it a `&self` argument
|
LL | fn from_residual(&self, residual: R) -> Self;
| ++++++
help: alternatively, consider constraining `from_residual` so it does not apply to trait objects
|
LL | fn from_residual(residual: R) -> Self where Self: Sized;
| +++++++++++++++++
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0038`.
|
