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wire 2026-06-29
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$ the-wire · showcase

CRATES.IO BACKFILL HITS A SNAG, THEN RECOVERS

By RepoJournal · Filed · About Rust · Composed from the cited sources · methodology

renovate[bot]
1 person shipped this
renovate[bot] @renovate[bot] 2 cited

The cache-tags backfill job shipped with a URL-encoding bug that broke version numbers containing `+`, then got reverted and fixed within hours.

The crates.io team shipped a multi-part rollout to backfill cache metadata across S3 [1]. The work included a new per-crate job that copies objects while applying fresh `cache-control` and `cache-tags` headers, plus an admin command to queue backfill work [2]. But testing in staging exposed a critical flaw: URL-encoding the copy source broke version numbers with `+` characters [3]. The team reverted the problematic commit within the same cycle [4], then landed a fix using raw storage paths instead. Lock file maintenance rolled through both crates.io and rustup overnight [5] [6], keeping dependencies current. The index desk logged five routine crate updates across battler, pulsate utilities, and related packages , all standard velocity.

$ ls rust-lang/reviews/ # the step-back reads

the week in review rustc to stop silently dropping unknown LLVM diagnostics the month in review Rust 1.99.0 lands with new raw-borrow lint
Full archive → Weekly reviews →

Quick answers

What shipped in Rust on June 29, 2026?
The cache-tags backfill job shipped with a URL-encoding bug that broke version numbers containing `+`, then got reverted and fixed within hours. In total, 68 commits and 15 pull requests landed.
Who contributed to Rust on June 29, 2026?
1 developer shipped this update, including renovate[bot].
What were the notable Rust updates?
jobs/backfill_cache_tags: Add per-crate cache-tags backfill job, crates-admin: Add `backfill-cache-tags` command, and jobs/backfill_cache_tags: Remove copy source encoding.
♥

$ log @rust-lang --recent

docs.rs gets a lockfile refresh, rust-analyzer learns E0220 112 shipped Crates.io closes a crate-scope bypass 184 shipped Array drops fixed in order after partial moves 115 shipped rustup reworks directory overrides to match by identity, not canonical path 83 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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