| error[E0623]: lifetime mismatch | |
| --> $DIR/signature-mismatch.rs:77:10 | |
| | | |
| LL | &'a self, | |
| | -------- this parameter and the return type are declared with different lifetimes... | |
| ... | |
| LL | ) -> impl Future<Output = Vec<u8>> { | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
| | | | |
| | ...but data from `buff` is returned here | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0623`. |