Allow some of the old tests to run.
Allow some of the old tests to run.

Byron/serde,JohnHeitmann/serde,sidred10/serde,eefriedman/serde,jmesmon/serde,tempbottle/serde,Hoverbear/serde,3Hren/serde,pcwalton/serde,erickt/serde,skade/serde,oli-obk/rust-serde,serde-rs/serde,Ticki/serde,thorbenk/serde,csmulhern/serde,infinityb/serde