Merge pull request #916 from pietroalbini/pa-1.58.1

Add blog post for 1.58.1

Author: pietroalbini

posts/2022-01-20-Rust-1.58.1.md

@@ -0,0 +1,53 @@
+---
+layout: post
+title: "Announcing Rust 1.58.1"
+author: The Rust Release Team
+release: true
+---
+
+The Rust team has published a new point release of Rust, 1.58.1. Rust is a
+programming language that is empowering everyone to build reliable and
+efficient software.
+
+If you have a previous version of Rust installed via rustup, getting Rust
+1.58.1 is as easy as:
+
+```
+rustup update stable
+```
+
+If you don't have it already, you can [get `rustup`][rustup] from the
+appropriate page on our website.
+
+[rustup]: https://www.rust-lang.org/install.html
+
+## What's in 1.58.1 stable
+
+Rust 1.58.1 fixes a race condition in the `std::fs::remove_dir_all` standard
+library function. This security vulnerability is tracked as [CVE-2022-21658],
+and you can read more about it [on the advisory we published earlier
+today][advisory]. We recommend all users to update their toolchain immediately
+and rebuild their programs with the updated compiler.
+
+Rust 1.58.1 also addresses several regressions in diagnostics and tooling introduced in Rust 1.58.0:
+
+* The `non_send_fields_in_send_ty` Clippy lint was discovered to have too many
+  false positives and has been moved to the experimental lints group (called
+  "nursery").
+* The `useless_format` Clippy lint has been updated to handle captured
+  identifiers in format strings, introduced in Rust 1.58.0.
+* A regression in Rustfmt preventing generated files from being formatted when
+  passed through the standard input has been fixed.
+* An incorrect error message displayed by `rustc` in some cases has been fixed.
+
+You can find more detailed information on the specific regressions in the
+[release notes].
+
+[CVE-2022-21658]: https://www.cve.org/CVERecord?id=CVE-2022-21658
+[advisory]: https://blog.rust-lang.org/2022/01/20/cve-2022-21658.html
+[release notes]: https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1581-2022-01-20
+
+### Contributors to 1.58.1
+
+Many people came together to create Rust 1.58.1. We couldn't have done it
+without all of you. [Thanks!](https://thanks.rust-lang.org/rust/1.58.1/)