Auto merge of #30516 - retep998:non-universal-crt, r=alexcrichton
Auto merge of #30516 - retep998:non-universal-crt, r=alexcrichton

Checks for a `10.` prefix on the subfolder because that is what vcvars does.

r? @alexcrichton

aidancully/rust,aidancully/rust,GBGamer/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,graydon/rust,GBGamer/rust,graydon/rust,graydon/rust,graydon/rust,GBGamer/rust,GBGamer/rust