Rust：Cargo.toml 错误：预期项目，在尝试包含 nalgebra 时发现 `[`

Question

[package]
name = "my package"
version = "0.1.0"
authors = ["me"]
edition = "2018"

[dependencies]
nalgebra = "0.18.1"

我尝试使用上面的 Cargo.toml 编译 rust，但它给了我以下错误：

error: expected item, found `[`
 --> Cargo.toml:1:1
  |
1 | [package]
  | ^ expected item

error: aborting due to previous error

如果我删除 nalgebra = "0.18.1"，我可以解决这个问题，但我不能使用 nalgebra 包，所以它对我没有帮助。

Answer 1

我认为您的 Cargo.toml 存在多个问题

这是不允许的：

name = "my package"

建议：

name = "my-package"

还有缺失的部分：

error during execution of `cargo metadata`: error: failed to parse manifest at `test/Cargo.toml`

Caused by:
  no targets specified in the manifest
  either src/lib.rs, src/main.rs, a [lib] section, or [[bin]] section must be present

你能把整个文件贴在这里吗？

最小可行设置：

[package]
name = "my-package"
version = "0.1.0"
authors = ["me"]
edition = "2018"

[[bin]]
name = "radkilla"
path = "src/main.rs"
doc = false

[dependencies]
nalgebra = "0.18.1"

src/main.rs

fn main() {}

运行 fmt 并构建：

➜  test cargo fmt ; cargo build
    Finished dev [unoptimized + debuginfo] target(s) in 0.11s

Answer 2

关闭在visual studio中打开的cargo.toml文件后错误消失。