感谢 @rz 提供，编辑器配置完毕，编译测试已经通过，可以安心去鼓捣wasm了。

按以下配置可以成功编译：

Current installation options:


default host triple: x86_64-pc-windows-msvc
default toolchain: stable
profile: default
modify PATH variable: yes

1) Proceed with installation (default)
2) Customize installation
3) Cancel installation
>2

I'm going to ask you the value of each of these installation options.
You may simply press the Enter key to leave unchanged.

Default host triple?
x86_64-pc-windows-gnu

Default toolchain? (stable/beta/nightly/none)
stable

Profile (which tools and data to install)? (minimal/default/complete)
default

Modify PATH variable? (y/n)
y