Can not find rustc plugin dll on windows

[luyang177]

Run Cargo clippy, and can not found rustc plugin dll, but my rust code works.
Clippy work fine on my ubuntu, but this is on windows, Windows always wast my time...

[Manishearth]

Dupe of https://github.com/Manishearth/rust-clippy/issues/1422 . rustup is not setting the path right, setting LD_LIBRARY_PATH or PATH (forget which) to the folder where rustc_plugin is should work