Rollup merge of #44598 - RalfJung:installer, r=alexcrichton
Rollup merge of #44598 - RalfJung:installer, r=alexcrichton

update rust-installer

Fixes <https://github.com/rust-lang/rust/issues/44594>

r? @alexcrichton

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