[Console] rustup install nightly

$ rustup install nightly
info: syncing channel updates for 'nightly'
info: downloading toolchain manifest
info: downloading component 'rustc'
info: downloading component 'rust-std'
info: downloading component 'rust-docs'
info: downloading component 'cargo'
info: installing component 'rustc'
info: installing component 'rust-std'
info: installing component 'rust-docs'
info: installing component 'cargo'

  nightly-x86_64-unknown-linux-gnu installed - rustc 1.15.0-nightly (71c06a56a 2016-12-18)