1.43.0

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.