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error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/span-bug-issue-121597.rs:14:23
|
LL | let x: &dyn Foo = &();
| ^^^ `Foo` 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/span-bug-issue-121597.rs:4:12
|
LL | trait Foo: for<T> Bar<T> {}
| --- ^^^^^^^^^^^^^ ...because where clause cannot reference non-lifetime `for<...>` variables
| |
| this trait cannot be made into an object...
= note: required for the cast from `&()` to `&dyn Foo`
error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/span-bug-issue-121597.rs:14:12
|
LL | let x: &dyn Foo = &();
| ^^^^^^^^ `Foo` 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/span-bug-issue-121597.rs:4:12
|
LL | trait Foo: for<T> Bar<T> {}
| --- ^^^^^^^^^^^^^ ...because where clause cannot reference non-lifetime `for<...>` variables
| |
| this trait cannot be made into an object...
error[E0308]: mismatched types
--> $DIR/span-bug-issue-121597.rs:18:15
|
LL | needs_bar(x);
| --------- ^ types differ in mutability
| |
| arguments to this function are incorrect
|
= note: expected raw pointer `*mut Type2`
found reference `&dyn Foo`
note: function defined here
--> $DIR/span-bug-issue-121597.rs:11:4
|
LL | fn needs_bar(_: *mut Type2) {}
| ^^^^^^^^^ -------------
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0038, E0308.
For more information about an error, try `rustc --explain E0038`.
|
