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warning: the feature `async_fn_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/lifetime-mismatch.rs:3:12
   |
LL | #![feature(async_fn_in_trait)]
   |            ^^^^^^^^^^^^^^^^^
   |
   = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information
   = note: `#[warn(incomplete_features)]` on by default

error[E0195]: lifetime parameters or bounds on method `foo` do not match the trait declaration
  --> $DIR/lifetime-mismatch.rs:12:17
   |
LL |     async fn foo<'a>(&self);
   |                 ---- lifetimes in impl do not match this method in trait
...
LL |     async fn foo(&self) {}
   |                 ^ lifetimes do not match method in trait

error: aborting due to previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0195`.