Bug#1104331: rustc: FTBFS on powerpc: bootstrap

Package: rustc
Version: 1.85.0+dfsg2-3
Severity: important
Tags: ftbfs
X-Debbugs-Cc: [email protected]
User: [email protected]
Usertags: powerpc

Hello,

rustc now FTBFS on powerpc. This is a regression because it was successfully
built on powerpc for version 1.85.0+dfsg1-1. I can reproduce this on my
own machine but I extracted no useful info from the log and I have no
idea why it fails. For ppc64el and ppc64 there is no such issue.

Link: https://buildd.debian.org/status/package.php?p=rustc&suite=sid
Link: https://buildd.debian.org/status/logs.php?pkg=rustc&arch=powerpc


Tail of log for rustc on powerpc:

  File "/build/reproducible-path/rustc-1.85.0+dfsg3/src/bootstrap/bootstrap.py", line 1354, in <module>
    main()
    ~~~~^^
  File "/build/reproducible-path/rustc-1.85.0+dfsg3/src/bootstrap/bootstrap.py", line 1334, in main
    bootstrap(args)
    ~~~~~~~~~^^^^^^
  File "/build/reproducible-path/rustc-1.85.0+dfsg3/src/bootstrap/bootstrap.py", line 1309, in bootstrap
    run(args, env=env, verbose=build.verbose, is_bootstrap=True)
    ~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/build/reproducible-path/rustc-1.85.0+dfsg3/src/bootstrap/bootstrap.py", line 236, in run
    raise RuntimeError(err)
RuntimeError: failed to run: /build/reproducible-path/rustc-1.85.0+dfsg3/build/bootstrap/debug/bootstrap -j 16 build --stage 2 --config debian/config.toml --on-fail env
make[1]: *** [debian/rules:308: debian/dh_auto_build.stamp] Error 1
make[1]: Leaving directory '/build/reproducible-path/rustc-1.85.0+dfsg3'
make: *** [debian/rules:208: binary-arch] Error 2



-- System Information:
Debian Release: trixie/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.21-amd64 (SMP w/128 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.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              2.44-3
ii  gcc                   4:14.2.0-1
ii  libc6                 2.41-7
ii  libc6-dev [libc-dev]  2.41-7
ii  libgcc-s1             14.2.0-19
ii  libstd-rust-dev       1.85.0+dfsg2-3

Versions of packages rustc recommends:
ii  cargo      1.85.0+dfsg2-3
ii  rust-llvm  1.85.0+dfsg2-3

rustc suggests no packages.

-- no debconf information