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error[E0700]: hidden type for `impl Sized + 'a` captures lifetime that does not appear in bounds
--> $DIR/rpit-hidden-erased-unsoundness.rs:16:5
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LL | fn step2<'a, 'b: 'a>() -> impl Sized + 'a {
| -- --------------- opaque type defined here
| |
| hidden type `impl Captures<'b> + 'a` captures the lifetime `'b` as defined here
LL | step1::<'a, 'b>()
| ^^^^^^^^^^^^^^^^^
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help: to declare that `impl Sized + 'a` captures `'b`, you can add an explicit `'b` lifetime bound
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LL | fn step2<'a, 'b: 'a>() -> impl Sized + 'a + 'b {
| ++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0700`.
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