devel/gitui: Unbreak build with Rust 1.57.0 (D33190)

error: field is never read: hash

--> asyncgit/src/blame.rs:28:5
 |

28 | hash: u64,

|     ^^^^^^^^^
|

note: the lint level is defined here

--> asyncgit/src/lib.rs:7:5
 |

7 | dead_code,

|     ^^^^^^^^^

error: field is never read: hash

--> asyncgit/src/diff.rs:41:5
 |

41 | hash: u64,

|     ^^^^^^^^^

error: field is never read: request

--> asyncgit/src/fetch.rs:28:5
 |

28 | request: FetchRequest,

|     ^^^^^^^^^^^^^^^^^^^^^

error: field is never read: request

--> asyncgit/src/push.rs:30:5
 |

30 | request: PushRequest,

|     ^^^^^^^^^^^^^^^^^^^^

error: field is never read: request

--> asyncgit/src/push_tags.rs:26:5
 |

26 | request: PushTagsRequest,

|     ^^^^^^^^^^^^^^^^^^^^^^^^

error: could not compile asyncgit due to 5 previous errors

http://package22.nyi.freebsd.org/data/130amd64-default-foo/2021-12-02_10h34m54s/logs/errors/gitui-0.16.2_3.log

PR: 260140