On Sat, 19 Apr 2025 13:11:59 +0200 Chris Hofstaedtler <zeha@debian.org>
wrote:

Source: rust-libxml
Version: 0.3.4-1
Severity: serious
Tags: ftbfs
Justification: ftbfs
User: debian-qa@lists.debian.org
Usertags: i386

0.3.3-1 built on i386, but 0.3.4-1 fails:

https://buildd.debian.org/status/fetch.php?pkg=rust-libxml&arch=i386&ver=0.3.4-1&stamp=1744884797&raw=0

[libxml 0.3.4] Failed to run rustfmt: No such file or directory (os

error 2) (non-fatal, continuing)

Running `CARGO=/usr/bin/cargo CARGO_CRATE_NAME=libxml

CARGO_MANIFEST_DIR=/build/reproducible-path/rust-libxml-0.3.4 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-libxml-0.3.4/Cargo.toml CARGO_PKG_AUTHORS='Andreas Franzén <andreas@devil.se>:Deyan Ginev <deyan.ginev@gmail.com>:Jan Frederik Schaefer <j.schaefer@jacobs-university.de>' CARGO_PKG_DESCRIPTION='A Rust wrapper
for libxml2 - the XML C parser and toolkit developed for the Gnome
project' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE=MIT
CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libxml
CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/KWARC/rust-libxml' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.3.4
CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=3
CARGO_PKG_VERSION_PATCH=4 CARGO_PKG_VERSION_PRE=''
CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH=/build/reproducible-path/rust-libxml-0.3.4/target/debug/deps OUT_DIR=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/build/libxml-71efd5eb7ddfc9ba/out
rustc --crate-name libxml --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type
lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=ad87879a69037324 -C extra-filename=-a99a53e479f7069c --out-dir /build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps
--target i686-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/incremental
-L dependency=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps
-L
dependency=/build/reproducible-path/rust-libxml-0.3.4/target/debug/deps --extern libc=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps/liblibc-0a4bc9978ad2a583.rmeta
-C debuginfo=2 -C strip=none --cap-lints warn -C
linker=i686-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-libxml-0.3.4=/usr/share/cargo/registry/libxml-0.3.4
--remap-path-prefix /build/reproducible-path/rust-libxml-0.3.4/debian/cargo_registry=/usr/share/cargo/registry
-L native=/usr/lib/i386-linux-gnu -l xml2`

error[E0080]: evaluation of constant value failed

/usr/share/cargo/registry/libxml-0.3.4/target/i686-unknown-linux-gnu/debug/build/libxml-71efd5eb7ddfc9ba/out/bindings.rs:3:62968

|
3 | ...n_t"] [:: std :: mem :: size_of :: < max_align_t > () -

24usize] ; ["Alignment of max_align_t"] [:: std :: mem :: align_of :: < max_al...

| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attempt to

compute `16_usize - 24_usize`, which would overflow

For more information about this error, try `rustc --explain E0080`.
error: could not compile `libxml` (lib) due to 1 previous error

Hi,

On 32-bit targets like i386, `size_of::<max_align_t>()` is 16, which
causes an underflow in const context.

There have been earlier reports of this in rust-bindgen; see [1].

Adding `.opaque_type("max_align_t")` to `build.rs` fixes the FTBFS.

Also submitted an upstream PR[2].


[1]: https://github.com/rust-lang/rust-bindgen/issues/1338
[2]: https://github.com/KWARC/rust-libxml/pull/148

                        C. Mitrodimas

Caused by:
process didn't exit successfully: `CARGO=/usr/bin/cargo

CARGO_CRATE_NAME=libxml CARGO_MANIFEST_DIR=/build/reproducible-path/rust-libxml-0.3.4 CARGO_MANIFEST_PATH=/build/reproducible-path/rust-libxml-0.3.4/Cargo.toml CARGO_PKG_AUTHORS='Andreas Franzén <andreas@devil.se>:Deyan Ginev <deyan.ginev@gmail.com>:Jan Frederik Schaefer <j.schaefer@jacobs-university.de>' CARGO_PKG_DESCRIPTION='A Rust wrapper
for libxml2 - the XML C parser and toolkit developed for the Gnome
project' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE=MIT
CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=libxml
CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='https://github.com/KWARC/rust-libxml' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.3.4
CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=3
CARGO_PKG_VERSION_PATCH=4 CARGO_PKG_VERSION_PRE=''
CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH=/build/reproducible-path/rust-libxml-0.3.4/target/debug/deps OUT_DIR=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/build/libxml-71efd5eb7ddfc9ba/out
rustc --crate-name libxml --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type
lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=ad87879a69037324 -C extra-filename=-a99a53e479f7069c --out-dir /build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps
--target i686-unknown-linux-gnu -C incremental=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/incremental
-L dependency=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps
-L
dependency=/build/reproducible-path/rust-libxml-0.3.4/target/debug/deps --extern libc=/build/reproducible-path/rust-libxml-0.3.4/target/i686-unknown-linux-gnu/debug/deps/liblibc-0a4bc9978ad2a583.rmeta
-C debuginfo=2 -C strip=none --cap-lints warn -C
linker=i686-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /build/reproducible-path/rust-libxml-0.3.4=/usr/share/cargo/registry/libxml-0.3.4
--remap-path-prefix /build/reproducible-path/rust-libxml-0.3.4/debian/cargo_registry=/usr/share/cargo/registry
-L native=/usr/lib/i386-linux-gnu -l xml2` (exit status: 1)

dh_auto_test: error: /usr/share/cargo/bin/cargo build returned exit

code 101

make: *** [debian/rules:3: binary-arch] Error 25

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)