error[E0277]: `Cell<()>` cannot be shared between threads safely
--> tests/ui/concurrent_access_does_not_compile.rs:12:17
|
12 | s.spawn(|| {
| ___________-----_^
| | |
| | required by a bound introduced by this call
13 | | test.list().push(&5).unwrap();
14 | | });
| |_________^ `Cell<()>` cannot be shared between threads safely
|
= help: within `Test`, the trait `Sync` is not implemented for `Cell<()>`
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock`
note: required because it appears within the type `PhantomData<Cell<()>>`
--> $RUST/core/src/marker.rs
|
| pub struct PhantomData<T: ?Sized>;
| ^^^^^^^^^^^
note: required because it appears within the type `Test`
--> tests/ui/concurrent_access_does_not_compile.rs:4:8
|
4 | struct Test {
| ^^^^
= note: required for `&Test` to implement `Send`
note: required because it's used within this closure
--> tests/ui/concurrent_access_does_not_compile.rs:12:17
|
12 | s.spawn(|| {
| ^^
note: required by a bound in `Scope::<'scope, 'env>::spawn`
--> $RUST/std/src/thread/scoped.rs
|
| pub fn spawn<F, T>(&'scope self, f: F) -> ScopedJoinHandle<'scope, T>
| ----- required by a bound in this associated function
| where
| F: FnOnce() -> T + Send + 'scope,
| ^^^^ required by this bound in `Scope::<'scope, 'env>::spawn`