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error[E0277]: `*mut (dyn std::ops::Fn() + 'static)` cannot be shared between threads safely
--> $DIR/send-sync.rs:8:5
|
LL | fn send<T: Send>(_: T) {}
| ---- ---- required by this bound in `send`
...
LL | send(format_args!("{:?}", c));
| ^^^^ `*mut (dyn std::ops::Fn() + 'static)` cannot be shared between threads safely
|
= help: within `[std::fmt::ArgumentV1<'_>]`, the trait `std::marker::Sync` is not implemented for `*mut (dyn std::ops::Fn() + 'static)`
= note: required because it appears within the type `std::marker::PhantomData<*mut (dyn std::ops::Fn() + 'static)>`
= note: required because it appears within the type `core::fmt::Void`
= note: required because it appears within the type `&core::fmt::Void`
= note: required because it appears within the type `std::fmt::ArgumentV1<'_>`
= note: required because it appears within the type `[std::fmt::ArgumentV1<'_>]`
= note: required because of the requirements on the impl of `std::marker::Send` for `&[std::fmt::ArgumentV1<'_>]`
= note: required because it appears within the type `std::fmt::Arguments<'_>`
error[E0277]: `*mut (dyn std::ops::Fn() + 'static)` cannot be shared between threads safely
--> $DIR/send-sync.rs:9:5
|
LL | fn sync<T: Sync>(_: T) {}
| ---- ---- required by this bound in `sync`
...
LL | sync(format_args!("{:?}", c));
| ^^^^ `*mut (dyn std::ops::Fn() + 'static)` cannot be shared between threads safely
|
= help: within `std::fmt::Arguments<'_>`, the trait `std::marker::Sync` is not implemented for `*mut (dyn std::ops::Fn() + 'static)`
= note: required because it appears within the type `std::marker::PhantomData<*mut (dyn std::ops::Fn() + 'static)>`
= note: required because it appears within the type `core::fmt::Void`
= note: required because it appears within the type `&core::fmt::Void`
= note: required because it appears within the type `std::fmt::ArgumentV1<'_>`
= note: required because it appears within the type `[std::fmt::ArgumentV1<'_>]`
= note: required because it appears within the type `&[std::fmt::ArgumentV1<'_>]`
= note: required because it appears within the type `std::fmt::Arguments<'_>`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
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