lifetimes do not match method in trait

[technetos]

When using async-trait the compiler reports that the lifetimes do not match when no lifetimes are specified. Specifying a lifetime resolves the issue even though the lifetime is never used.

This crate requires #![feature(proc_macro_hygiene)] and thus requires nightly.

$ cargo check                                                                                                                                                                                                               master
    Checking enzyme v0.1.0 (/usr/dataplus/enzyme)
    Checking user v0.1.0 (/usr/dataplus/enzyme/example/microservices/user)
error[E0195]: lifetime parameters or bounds on method `from_parts` do not match the trait declaration
  --> src/context.rs:10:24
   |
10 |     async fn from_parts(_parts: Parts, _params: Params) -> WebResult<TokenContext> {
   |                        ^ lifetimes do not match method in trait

error[E0195]: lifetime parameters or bounds on method `from_parts` do not match the trait declaration
  --> src/context.rs:21:24
   |
21 |     async fn from_parts(parts: Parts, _params: Params) -> WebResult<AuthContext> {
   |                        ^ lifetimes do not match method in trait

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0195`.
error: could not compile `user`.

To learn more, run the command again with --verbose.

Trait Definition:

https://github.com/technetos/enzyme/blob/master/src/context.rs#L7

Trait Usage:

https://github.com/technetos/enzyme/blob/master/example/microservices/user/src/context.rs#L10
and
https://github.com/technetos/enzyme/blob/master/example/microservices/user/src/context.rs#L21

Method of reproduction:

Remove the <'a> lifetime from the trait definition and the usages above. Run cargo check

[dtolnay]

Thanks! Should be fixed in 0.1.16.