There are a bunch of links in the String documentation page which are broken. The reason for this is that most links are drawn from the documentation of the str type at /std/primitive.str.html but the String page is located at /std/string/struct.String.html. This mismatch in depth of paths causes a number of broken links, for example on the String::split method.

Not sure of the best way to fix this, but needs a tracking issue.