1.win10下载标准库

C:\WINDOWS\system32>rustup -V
rustup 1.23.1 (3df2264a9 2020-11-30)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.48.0 (7eac88abb 2020-11-16)`

C:\WINDOWS\system32>rustup show
Default host: x86_64-pc-windows-msvc
rustup home:  C:\SoftwareCode\rust\.rustup

stable-x86_64-pc-windows-msvc (default)
rustc 1.48.0 (7eac88abb 2020-11-16)

C:\WINDOWS\system32>rustup component add rust-src
info: downloading component 'rust-src'
info: installing component 'rust-src'
info: using up to 500.0 MiB of RAM to unpack components

2.标准库文件结构

 \.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust 的目录

2020/12/16  10:59    <DIR>          .
2020/12/16  10:59    <DIR>          ..
2020/12/16  10:59           120,632 Cargo.lock
2020/12/16  10:59    <DIR>          library
2020/12/16  10:59    <DIR>          src

 \.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src 的目录

2020/12/16  10:59    <DIR>          .
2020/12/16  10:59    <DIR>          ..
2020/12/16  10:59    <DIR>          llvm-project

3.idea 设置标准库

3.1设置 "File > Settings > Languages & Frameworks > Rust"

standard library : C:\SoftwareCode\rust\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src

3.2报错

Cargo project update failed: corrupted standard library: C:\SoftwareCode\rust\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\src\rust\src