re-add ;, thanks @alan-andrade
re-add ;, thanks @alan-andrade

gpbonillas/rust_for_rubyists,gpbonillas/rust_for_rubyists,gpbonillas/rust_for_rubyists,dskecse/rust_for_rubyists,steveklabnik/rust_for_rubyists,dskecse/rust_for_rubyists,steveklabnik/rust_for_rubyists,dskecse/rust_for_rubyists,steveklabnik/rust_for_rubyists