The [src] link at http://static.rust-lang.org/doc/master/std/prelude/index.html
points to http://static.rust-lang.org/doc/master/src/std/home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libstd/lib.rs.html#99
instead of http://static.rust-lang.org/doc/master/src/std/home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libstd/prelude.rs.html

Just a small issue I noticed. I hope reporting it helps!