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error[E0277]: `F` cannot be sent between threads safely
--> $DIR/closure-bounds-cant-promote-superkind-in-struct.rs:5:22
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LL | fn foo<F>(blk: F) -> X<F> where F: FnOnce() + 'static {
| ^^^^ `F` cannot be sent between threads safely
|
note: required by a bound in `X`
--> $DIR/closure-bounds-cant-promote-superkind-in-struct.rs:1:43
|
LL | struct X<F> where F: FnOnce() + 'static + Send {
| ^^^^ required by this bound in `X`
help: consider further restricting type parameter `F` with trait `Send`
|
LL | fn foo<F>(blk: F) -> X<F> where F: FnOnce() + 'static + std::marker::Send {
| +++++++++++++++++++
error[E0277]: `F` cannot be sent between threads safely
--> $DIR/closure-bounds-cant-promote-superkind-in-struct.rs:7:23
|
LL | return X { field: blk };
| ^^^ `F` cannot be sent between threads safely
|
note: required by a bound in `X`
--> $DIR/closure-bounds-cant-promote-superkind-in-struct.rs:1:43
|
LL | struct X<F> where F: FnOnce() + 'static + Send {
| ^^^^ required by this bound in `X`
help: consider further restricting type parameter `F` with trait `Send`
|
LL | fn foo<F>(blk: F) -> X<F> where F: FnOnce() + 'static + std::marker::Send {
| +++++++++++++++++++
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
|
