Version 1.43.1 (2020-05-07)

Version 1.43.0 (2020-04-23)

Language

Syntax only changes

These are still rejected semantically, so you will likely receive an error but these changes can be seen and parsed by macros and conditional compilation.

Compiler

Libraries

Stabilized APIs

Cargo

Misc

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.