Auto merge of #5646 - flip1995:rustup, r=matthiaskrgr
Auto merge of #5646 - flip1995:rustup, r=matthiaskrgr

Rustup

r? @phansch

changelog: none

aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust