What’s new in Rust 1.52

The unique approach of the Rust programming language results in better code with fewer compromises than C, C++, Go, and the other languages you probably use. It also gets updated regularly, often every month.

Where to download the latest Rust version

If you already have a previous version of Rust installed via rustup, you can access the latest version via the following command:

$ rustup update stable

The new features in Rust 1.52

Introduced May 6, Rust 1.52 was led by an enhancement to tooling support for Clippy, which is a collection of lints to find mistakes and improve Rust code. Previously, running cargo check followed by cargo clippy would not actually run Clippy, with the build caching in Cargo not differentiating between the two. This has been fixed in Rust 1.52. Also in version 1.52, the following methods were stabilized:

Several previously stable APIs, including char::len_utf8 and u8LLeq_ignore_ascii_case, are now const. For the compiler, the default LLVM has been upgraded to LLVM 12. A subsequent point release of the language, Rust 1.52.1, published May 10, provides a workaround for a bug in incremental compilation that was made into a compiler error in Rust 1.52.0. Rust builders recommend either an upgrade to 1.52.1 or disabling incremental compilation.

The new features in Rust 1.51.0

Published March 25, 2021, the Rust 1.51.0 release is one of the largest additions to the language and Cargo package manager in quite some time, with the stabilization of an MVP (minimum viable product) implementation of const generics and a new feature resolver for Cargo among the highlights. Other highlights:

The new features in Rust 1.50.0

Published February 11, 2021, Rust 1.50.0 improves array indexing, expands safe access to union fields, and adds to the standard library. Specific improvements include:

The new features in Rust 1.49.0

Announced December 31, 2020, Rust 1.49.0 designates 64-bit Arm Linux as a Tier 1 target, thus providing the highest support guarantee, with the full test suite run on this platform on every change merged in the compiler. This support is expected to benefit workloads spanning from embedded systems to servers and desktops. Prebuilt binaries also are available. This marks the first time a non-x86 target has reached Tier 1 support. The Rust development team hopes to bring more platforms into this tier in the future.

Also with Rust 1.49.0, 64-bit Arm for MacOS and Windows reach Tier 2 support. Developers can expect these two targets to have prebuilt binaries installable from rustup. Tier 2 targets are guaranteed to build, and prebuilt binaries are provided. However, the Rust team does not execute the test suite on those platforms. Produced binaries may not work and might have bugs.

Other additions, improvements, and changes in Rust 1.49.0:

• Three stable functions have been added to the library: slice::select_nth_unstable, slice::select_nth_unstable_by, and slice::select_nth_unstable_by_key.
• Two library functions were made const: Poll::is_ready and Poll::is_pending.
• For the language, unions now can implement Drop and developers now can have a field in a union with ManuallyDrop<T>. Also, uninhibited enums can be cast to integers.
• Developers can bind by reference and bind by move in patterns, enabling developers to selectively borrow individual components of a type.
• For the compiler, the minimum supported version of LLVM has been moved to LLVM 9.

The new features in Rust 1.48.0

Unveiled on November 19, 2020, Rust 1.48.0 features easier linking in the Rustdoc library documentation tool, with syntax to let Rustdoc know when developers are trying to link to a type; URLs will be generated. Also in version 1.48.0:

The new features in Rust 1.47.0

Announced October 8, 2020, Rust 1.47.0 has no new language features but enhances the standard library. Quality of life and toolchain improvements as well as library stabilizations are featured in the release. Release notes have been published for the upgrade.

Specific capabilities in Rust 1.47.0 include:

The new features in 1.46.0

Rust 1.46, announced on August 27, 2020, includes the following capabilities:

The new features in Rust 1.45.0

Announced on July 16, 2020, Rust 1.45 includes the following additions and improvements:

The new features in Rust 1.43.1

This point release was introduced May 7, 2020, to address two regressions introduced in the 1.43.0 stable release. It also updates the OpenSSL version used by the Cargo package manager. Features include:

The new features in Rust 1.43.0

Announced April 23, 2020, Rust 1.43.0 was considered a fairly minor release, with no major features introduced. Changes include:

The new features in Rust 1.41