- rustup: Build with panic=abort
- rustup: Replace custom download crate with reqwest
- rustup: "update not yet available" message should not error
- rustup: Document the use of toolchain link
- rustup: Document the usage of CARGO_HOME and RUSTUP_HOME to install to a custom location
- rustup: Improve indentation of help
- rustup: Installation failure via the script has bad error message