chains: factor into objects
chains: factor into objects

graydon/rust,rust-lang/rustfmt,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,SingingTree/rustfmt,SingingTree/rustfmt,graydon/rust,aidancully/rust,rust-lang/rustfmt,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust