error[E0277]: `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<()>>>();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Rc<()>` cannot be sent between threads safely
|
= note: required because of the requirements on the impl of `Send` for `hashbrown::raw::RawTable<(Rc<()>, Rc<()>)>`
= note: required because it appears within the type `hashbrown::map::HashMap<Rc<()>, Rc<()>, RandomState>`
= note: required because it appears within the type `HashMap<Rc<()>, Rc<()>>`
+note: required by a bound in `foo`
+ --> $DIR/issue-21763.rs:6:11
+ |
+LL | fn foo<T: Send>() {}
+ | ^^^^ required by this bound in `foo`
error: aborting due to previous error