Go to this point in the docs and click on is_dir. It results in an S3 error. I'm guessing this is because it's for a impl against path::Path, but because it's in std::io::fs it is choking. So the doc metadata is there, but something is missing? the mention of an extension for Path is missing std::io::fs, as well (actually that's not entirely true.. it's mentioned in the last paragraph of the intro-doc for the module).
Is this an already known issue?