1.49.0

1.49.0 (2020-12-31) #

Language #

Compiler #

* Refer to Rust’s [platform support page][platform-support-doc] for more information on Rust’s tiered platform support.

Libraries #

Stabilized APIs #

The following previously stable methods are now const.

Cargo #

Compatibility Notes #

Internal Only #

These changes provide no direct user facing benefits, but represent significant improvements to the internals and overall performance of rustc and related tools.