rustup help toolchain 列出以下子命令
SUBCOMMANDS:
list List installed toolchains
install Install or update a given toolchain
uninstall Uninstall a toolchain
link Create a custom toolchain by symlinking to a directory
help Prints this message or the help of the given subcommand(s)
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我安装了以下工具链
stable-x86_64-unknown-linux-gnu (default)
nightly-2019-09-05-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu
master
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我试图解决 rust-clippy 的问题,所以我不得不安装主工具链。尽管将稳定设置为我的默认工具链,但我当前的工具链是主工具链,我想切换回稳定。如何在不卸载主工具链的情况下执行此操作?
没有 switch 子命令吗?