Old docs appear under `/doc/master/ng/...` on the website

[huonw]

e.g. http://static.rust-lang.org/doc/master/ng/std/index.html

They should be removed.

[emberian]

False positive, due to browser caching.

[huonw]

Fixed, thanks @alexcrichton.

[adrientetar]

@huonw I think I've got a similar situation:
http://static.rust-lang.org/doc/master/src/extra/home/rustbuild/src/rust-buildbot/slave/doc/build/src/libextra/fileinput.rs.html