← Back to Resources
Open Source NewsOctober 2, 20262 min read

Rust Demotes i686 Windows Targets to Std-Only

By BIOS Founding Team

Rust Demotes i686 Windows Targets to Std-Only

With Rust 1.100.0, i686-pc-windows-msvc drops from Tier 1 with host tools to Tier 1 without host tools, and i686-pc-windows-gnu drops from Tier 2 with host tools to Tier 2 without them. The standard library is still shipped, and the MSVC target stays in CI.

Developers on 32-bit Windows will need to cross-compile from a 64-bit host. The team cites crashes and out-of-memory failures when building the toolchains.

Full details: https://blog.rust-lang.org/2026/10/02/demoting-i686-windows-targets-to-std-only/