Use concat() instead of join("")
Use concat() instead of join("")

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