rosdep update error (gentoo.yaml empty)

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Hi, I just noticed a strange error when executing rosdep update.

$ rosdep update
reading in sources list data from /etc/ros/rosdep/sources.list.d
Hit file:///etc/ros/rosdep/local.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/osx-homebrew.yaml
ERROR: unable to process source [https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml]:
    rosdep data from [https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml] is not a YAML dictionary
Hit https://github.com/ros/rosdistro/raw/master/rosdep/base.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/python.yaml
Hit https://github.com/ros/rosdistro/raw/master/rosdep/ruby.yaml
Hit https://github.com/ros/rosdistro/raw/master/releases/fuerte.yaml
Ignore legacy gbpdistro "groovy"
Ignore legacy gbpdistro "hydro"
Query rosdistro index https://raw.github.com/ros/rosdistro/master/index.yaml
Add distro "groovy"
Add distro "indigo"
Add distro "hydro"
updated cache in /Users/demmeln/.ros/rosdep/sources.cache
ERROR: Not all sources were able to be updated.
[[[
ERROR: unable to process source [https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml]:
    rosdep data from [https://github.com/ros/rosdistro/raw/master/rosdep/gentoo.yaml] is not a YAML dictionary
]]]

If I look at https://github.com/ros/rosdistro/blob... , it looks fine, however for me, the raw version https://github.com/ros/rosdistro/raw/... which rosdep downloads seems to be empty (0 bytes). Is this some faulty caching on github's side, or somewhere on my machine? I get the same with browser and from command line (wget), so not sure what kind of cache that would be...

Can anyone confirm the empty file with the "raw" link?