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To: Debian Bug Tracking System &lt;submit@bugs.debian.org&gt;
From: Peter Green &lt;plugwash@debian.org&gt;
Subject: rust-ethnum-intrinsics - autopkgtest failure with rustc 1.96.1
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Package: rust-ethnum-intrinsics
Version: 1.2.0-1
Severity: serious

The autopkgtest for rust-ethnum-intrinsics is failing with rustc
1.96.1 (passes with rustc 1.95.0)

https://ci.debian.net/packages/r/rust-ethnum-intrinsics/testing/amd64/76287058/#S7

&gt;  87s [ethnum-intrinsics 1.2.0] cargo:warning=/tmp/tmp.jt05ShXuiT/target/x86_64-unknown-linux-gnu/debug/build/ethnum-intrinsics-34a87cfafd80ec4e/out/intrinsics.ll:255:43: error: unterminated attribute group
&gt;  87s [ethnum-intrinsics 1.2.0] cargo:warning=  255 | attributes #3 = { mustprogress nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
&gt;  87s [ethnum-intrinsics 1.2.0] cargo:warning=      |                                           ^
&gt;  87s [ethnum-intrinsics 1.2.0] cargo:warning=1 error generated.
&gt;  87s [ethnum-intrinsics 1.2.0] Error: Error { kind: ToolExecError, message: &quot;command did not execute successfully (status code exit status: 1): LC_ALL=\&quot;C\&quot; \&quot;clang\&quot; \&quot;-O3\&quot; \&quot;-ffunction-sections\&quot; \&quot;-fdata-sections\&quot; \&quot;-fPIC\&quot; \&quot;-g\&quot; \&quot;-gdwarf-4\&quot; \&quot;-fno-omit-frame-pointer\&quot; \&quot;-m64\&quot; \&quot;--target=x86_64-unknown-linux-gnu\&quot; \&quot;-g\&quot; \&quot;-O2\&quot; \&quot;-Werror=implicit-function-declaration\&quot; \&quot;-ffile-prefix-map=/usr/share/cargo/registry/ethnum-intrinsics-1.2.0=.\&quot; \&quot;-fstack-protector-strong\&quot; \&quot;-fstack-clash-protection\&quot; \&quot;-Wformat\&quot; \&quot;-Werror=format-security\&quot; \&quot;-fcf-protection\&quot; \&quot;-o\&quot; \&quot;/tmp/tmp.jt05ShXuiT/target/x86_64-unknown-linux-gnu/debug/build/ethnum-intrinsics-34a87cfafd80ec4e/out/2d6e53ea640327d5-intrinsics.o\&quot; \&quot;-c\&quot; \&quot;/tmp/tmp.jt05ShXuiT/target/x86_64-unknown-linux-gnu/debug/build/ethnum-intrinsics-34a87cfafd80ec4e/out/intrinsics.ll\&quot;&quot; }
&gt;  87s warning: ethnum-intrinsics@1.2.0: /tmp/tmp.jt05ShXuiT/target/x86_64-unknown-linux-gnu/debug/build/ethnum-intrinsics-34a87cfafd80ec4e/out/intrinsics.ll:255:43: error: unterminated attribute group
&gt;  87s warning: ethnum-intrinsics@1.2.0:   255 | attributes #3 = { mustprogress nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }
&gt;  87s warning: ethnum-intrinsics@1.2.0:       |                                           ^
&gt;  87s warning: ethnum-intrinsics@1.2.0: 1 error generated.
&gt;  87s error: failed to run custom build command for `ethnum-intrinsics v1.2.0 (/usr/share/cargo/registry/ethnum-intrinsics-1.2.0)`

I'd guess that this is caused by a llvm version mismatch betwen rustc and clang,
but I don't know what the best way to fix it is.
]