# Beta testing rustup.rs

**URL:** <https://internals.rust-lang.org/t/beta-testing-rustup-rs/3316>\
**Category:** Uncategorized\
**Created:** [March 28, 2016, 8:35pm UTC](https://internals.rust-lang.org/t/beta-testing-rustup-rs/3316 "2016-03-28T20:35:42Z")\
**Posts on this page:** 1\
**Showing post:** 147

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**Author:** ![brson](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/brson/32/5197_2.png) [@brson](https://internals.rust-lang.org/u/brson)\
**Post date:** [July 22, 2016, 10:01pm UTC](https://internals.rust-lang.org/t/beta-testing-rustup-rs/3316/147 "2016-07-22T22:01:46Z")

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`rustup` 0.4.0 is out. To get it run `rustup self update`.

This release brings the hyper backend’s proxy support up to parity with the curl backend and [documents how to use HTTP proxies](https://github.com/rust-lang-nursery/rustup.rs#working-with-http-proxies). It also adds a compile-time ‘no-self-updates’ feature for use by those distributing rustup through other package managers.

# 0.4.0

- [Improve rustls CA certificate loading](https://github.com/rust-lang-nursery/rustup.rs/pull/585)
- [Detect ARMv7 CPUs without NEON extensions and treat as ARMv6](https://github.com/rust-lang-nursery/rustup.rs/pull/593)
- [Allow any toolchain to be specified as the default during rustup installation](https://github.com/rust-lang-nursery/rustup.rs/pull/586)
- [Add details about updating rustup to README](https://github.com/rust-lang-nursery/rustup.rs/pull/590)
- [Update libbacktrace to generate less filesystem thrashing on Windows](https://github.com/rust-lang-nursery/rustup.rs/pull/604)
- [Update gcc dep to fix building on MSVC](https://github.com/rust-lang-nursery/rustup.rs/pull/605)
- [Remove the multirust binary](https://github.com/rust-lang-nursery/rustup.rs/pull/606)
- [Use the env\_proxy crate for proxy environment variable handling](https://github.com/rust-lang-nursery/rustup.rs/pull/598)
- [Set system-specific dynamic loader env var for command execution](https://github.com/rust-lang-nursery/rustup.rs/pull/600)
- [Hide telemetry command from top level help](https://github.com/rust-lang-nursery/rustup.rs/pull/601)
- [Add the “no-self-update” feature](https://github.com/rust-lang-nursery/rustup.rs/pull/602)
- [Update to error-chain 0.2.2](https://github.com/rust-lang-nursery/rustup.rs/pull/602)
- [Add HTTP proxy documentation to README](https://github.com/rust-lang-nursery/rustup.rs/pull/610)

Contributors: Alex Crichton, Brian Anderson, Ivan Nejgebauer, Jimmy Cuadra, Martin Pool, Wesley Moore

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_[View the full topic](https://internals.rust-lang.org/t/beta-testing-rustup-rs/3316)._