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我正在使用一些 sqlx::query！和 sqlx::query_as！我的项目编译得很好。但是当我运行 cargo sqlx prepare 时，我首先得到错误：

$ cargo sqlx prepare
error: extra arguments to `rustc` can only be passed to one target, consider filtering
the package by passing, e.g., `--lib` or `--bin NAME` to specify a single target
error: `cargo check` failed with status: exit status: 101

然后当我用“---lib”运行它时，我得到：

$ cargo sqlx prepare -- --lib
   Compiling crate v0.1.0 (/Users/ryan/Documents/crate)
    Finished dev [unoptimized + debuginfo] target(s) in 5.78s
warning: no queries found; please ensure that the `offline` feature is enabled in sqlx
query data written to `sqlx-data.json` in the current directory; please check this into version control

我用--bin 得到了类似的输出。

我在这里做错了什么？

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