i64::wrapping_neg is not stable yet
i64::wrapping_neg is not stable yet

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