Rust async fundamentalsfamiliarity with gitui codebase
新手友善度1-100 的估計分數,表示該議題對首次貢獻者的友善程度。
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研究方向
Locate the function `branch compare upstream` in the `sync::branch` module. Review issue #1845 to understand the async migration pattern used. Convert the function to return a `Future` and update its callers. Ensure proper error handling and await points. Consider using `async trait` if trait bounds are involved.