error[E0277]: the size for values of type `str` cannot be known at compilation time --> $DIR/sized-yield.rs:8:26 | LL | let mut gen = move || { | __________________________^ LL | | LL | | yield s[..]; LL | | }; | |____^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `str` = note: the yield type of a generator must have a statically known size error[E0277]: the size for values of type `str` cannot be known at compilation time --> $DIR/sized-yield.rs:12:23 | LL | Pin::new(&mut gen).resume(()); | ^^^^^^ doesn't have a size known at compile-time | ::: $SRC_DIR/core/src/ops/generator.rs:LL:COL | LL | pub enum GeneratorState { | - required by this bound in `GeneratorState` | = help: the trait `Sized` is not implemented for `str` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0277`.