chains: simplify visual formatting a bit
chains: simplify visual formatting a bit

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