Rust Release Notes

Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
See also the full Cargo changelog
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
Cargo compatibility notes:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These previously stable APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
These APIs are now stable in const contexts:
These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.
Refer to Rust’s platform support page for more information on Rust’s tiered platform support.
Panics in the standard library now have a leading library/ in their path
std::env::home_dir() on Windows now ignores the non-standard $HOME environment variable
It will be un-deprecated in a subsequent release.
Add AsyncFn* to the prelude in all editions.
These APIs are now stable in const contexts:
rustc no longer treats the test cfg as a well known check-cfg, instead it is up to the build systems and users of --check-cfg1 to set it as a well known cfg using --check-cfg=cfg(test).