Update sync_wrapper to 1.0.0 from 0.1.1

[Hmikihiro]

Motivation

sync_wrapper had a dependency future-core until version 0.1.1.
Now, future-core is optional in sync_wrapper from version 0.1.2
struct SyncStream is dependent future-core but axum doesn't use struct SyncStream.

Updating to version 0.1.2 or later separates sync_wrapper from future-core.

Solution

Update sync_wrapper to 1.0.0

[jplatte]

Thanks!

[jplatte]

Do you mind updating the MSRV in Cargo.toml to 1.57 for axum-core, to fix CI?

[jplatte]

Damn, more errors. If you want you can try to fix them here, otherwise I'll try to find some time for doing that separately soon.

[Hmikihiro]

Sorry, I could not fix CI/test-nightly. I fix only CI/check.

[Hmikihiro]

I think I have fixed all the Cl/test-nightly.

[jplatte]

Wow that was a lot of stuff that created new warnings all at once. Thanks a lot for taking care of all the small changes required to make CI happy again!