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Wed, 29 Apr 2026 12:18:39 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface MIME-Version: 1.0 Date: Wed, 29 Apr 2026 18:18:18 +0200 From: =?UTF-8?Q?Fabian_Gr=C3=BCnbichler?= <debian@fabian.gruenbichler.email> To: "Debian Bug Tracking System" <submit@bugs.debian.org> Message-Id: <348409c0-b80d-4262-b611-4c5f404a3464@app.fastmail.com> Subject: rustdoc 1.85.0 breaks Linux arm32 build Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Greylist: delayed 471 seconds by postgrey-1.37 at buxtehude; Wed, 29 Apr 2026 16:26:35 UTC Delivered-To: submit@bugs.debian.org Package: rustdoc Version: 1.85.0+dfsg3-1 Severity: normal Tags: upstream patch X-Debbugs-Cc: ojeda@kernel.org, debian@fabian.gruenbichler.email Citing from a rust-for-linux upstream discussion thread[1]: > For Rust 1.85.0, for arm32, for the `rustdoc` target (i.e. all those > combined), I am seeing: > > RUSTDOC .../1.85.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/lib.rs > error: target feature `fp-armv8` cannot be toggled with `#[target_feature]`: Rust ties `fp-armv8` to `neon` > --> .../1.85.0-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/../../stdarch/crates/core_arch/src/arm_shared/neon/generated.rs:7538:48 > | > 7538 | #[cfg_attr(target_arch = "arm", target_feature(enable = "fp-armv8,v8"))] > | ^^^^^^^^^^^^^^^^^^^^^ > > The issue is [1], was introduced in Rust 1.85.0 and was fixed already in > Rust 1.85.1 [2]: > > Link: https://github.com/rust-lang/rust/issues/137366 [1] > Link: https://github.com/rust-lang/rust/pull/137632 [2] An update to rustc 1.85.1 is fairly minimal and fixes the issue at hand. 1: https://lore.kernel.org/all/20260331190053.482607-1-ojeda@kernel.org/ -- System Information: Debian Release: forky/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: arm64, sparc64 Kernel: Linux 6.19.13+deb14-amd64 (SMP w/16 CPU threads; PREEMPT) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages rustc depends on: ii binutils 2.46-3 ii gcc 4:15.2.0-5 ii libc6 2.42-15 ii libc6-dev [libc-dev] 2.42-15 ii libgcc-s1 16-20260322-1 ii libstd-rust-dev 1.94.1+dfsg1-1 Versions of packages rustc recommends: ii cargo 1.94.1+dfsg1-1 ii rust-llvm 1.94.1+dfsg1-1 rustc suggests no packages. -- no debconf information ]