Stability dashboard: crate rustc-serialize

This dashboard summarizes the stability levels for all of the public modules of the crate, according to the total number of items at each level in the module and its children (percentages total for rustc-serialize):
stable (15%),
unstable (1%),
unmarked (82%)
The counts do not include methods or trait implementations that are visible only through a re-exported type.
rustc-serialize   
rustc-serialize::base64   
rustc-serialize::hex   
rustc-serialize::json