Disable incremental build for windows
Disable incremental build for windows

Testing if this speeds up compilation time for the Windows CI build.

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