--- title: This Week in Rust 660 · This Week in Rust | daily.dev description: Issue 660 of This Week in Rust covers the latest developments in the Rust ecosystem for the week of July 15, 2026. Highlights include 550 merged pull requests,... canonical: https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: This Week in Rust 660 · This Week in Rust | daily.dev og:description: Issue 660 of This Week in Rust covers the latest developments in the Rust ecosystem for the week of July 15, 2026. Highlights include 550 merged pull requests,... og:url: https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j og:image: https://api.daily.dev/og/posts/nP4JNzV6J.png og:image:alt: This Week in Rust 660 · This Week in Rust og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # This Week in Rust 660 · This Week in Rust **[This Week in Rust](https://daily.dev/sources/twirust)** · 10 min read · 16 upvotes · 0 comments ## Summary Issue 660 of This Week in Rust covers the latest developments in the Rust ecosystem for the week of July 15, 2026. Highlights include 550 merged pull requests, significant compiler performance improvements (primary benchmarks improved by -1.2% on average with some up to -9.9%), new Clippy lints, Rust-Analyzer bug fixes, and Cargo updates. Community news includes Bun announcing a rewrite in Rust, BullMQ releasing a Rust version, and the dashu arbitrary-precision numbers crate as Crate of the Week. The newsletter also covers upcoming Rust events worldwide, RFCs in final comment period, and links to walkthroughs and observations from the community. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#open-source](https://daily.dev/tags/open-source), [#rust](https://daily.dev/tags/rust) [View this post on daily.dev](https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"This Week in Rust 660 · This Week in Rust","url":"https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j"},"datePublished":"2026-07-16T04:32:25.818Z","dateModified":"2026-09-14T09:15:58.214Z","description":"Issue 660 of This Week in Rust covers the latest developments in the Rust ecosystem for the week of July 15, 2026. Highlights include 550 merged pull requests,...","image":"https://media.daily.dev/image/upload/s--VDukGCjf--/f_auto/v1722860399/public/Placeholder%2002","thumbnailUrl":"https://media.daily.dev/image/upload/s--VDukGCjf--/f_auto/v1722860399/public/Placeholder%2002","isAccessibleForFree":true,"articleSection":"This Week in Rust","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"This Week in Rust","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/2e9ca963c9254cf88c4e91f492bba34b","url":"https://daily.dev/sources/twirust"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/this-week-in-rust-660-this-week-in-rust-np4jnzv6j","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":16},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"open-source,rust","timeRequired":"PT10M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"This Week in Rust","item":"https://daily.dev/sources/twirust"},{"@type":"ListItem","position":3,"name":"This Week in Rust 660 · This Week in Rust"}]} ```