| error[E0277]: `std::rc::Rc<()>` cannot be sent between threads safely |
| --> $DIR/issue-21763.rs:9:5 |
| | |
| LL | fn foo<T: Send>() {} |
| | ---- required by this bound in `foo` |
| ... |
| LL | foo::<HashMap<Rc<()>, Rc<()>>>(); |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::rc::Rc<()>` cannot be sent between threads safely |
| | |
| = help: within `(std::rc::Rc<()>, std::rc::Rc<()>)`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>` |
| = note: required because it appears within the type `(std::rc::Rc<()>, std::rc::Rc<()>)` |
| = note: required because of the requirements on the impl of `std::marker::Send` for `hashbrown::raw::RawTable<(std::rc::Rc<()>, std::rc::Rc<()>)>` |
| = note: required because it appears within the type `hashbrown::map::HashMap<std::rc::Rc<()>, std::rc::Rc<()>, std::collections::hash_map::RandomState>` |
| = note: required because it appears within the type `std::collections::HashMap<std::rc::Rc<()>, std::rc::Rc<()>>` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
