Extract rustup-init.xz. To install rustup configured to not install docs by
default, run:
rustup-init --profile=minimal
(rustup-init --help will help you)
After installing, please run rustup dump-testament, and verify that the output is:
Rustup version renders as: 1.18.3+119 (b5787936d 2019-07-03)
Current crate version: 1.18.3
Built from branch: profiles
Commit info: 1.18.3+119 (b5787936d 2019-07-03)
Working tree is clean