:: Synchronizing package databases...
 core-staging downloading...
 core-testing downloading...
 core downloading...
 extra-staging downloading...
 extra-testing downloading...
 extra downloading...
:: Starting full system upgrade...
 there is nothing to do
==> Building in chroot for [extra-staging] (pentium4)...
==> Synchronizing chroot copy [/var/lib/archbuild/extra-staging-pentium4/root] -> [build]...done
==> Making package: rss2email 3.14-7.0 (Thu May  8 21:44:20 2025)
==> Retrieving sources...
  -> Found rss2email-3.14.tar.gz
  -> Found 0001-Use-poetry-core-as-build-backend.patch
==> Validating source files with sha256sums...
    rss2email-3.14.tar.gz ... Passed
    0001-Use-poetry-core-as-build-backend.patch ... Passed
gpg: Warning: using insecure memory!
==> Appending keys from archlinux32.gpg...
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
==> Updating trust database...
gpg: Warning: using insecure memory!
gpg: next trustdb check due at 2025-07-01
==> Making package: rss2email 3.14-7.0 (Thu May  8 21:44:23 2025)
==> Checking runtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Package (3)                      New Version    Net Change  Download Size

extra-staging/python-sgmllib3k   1.0.0-7.0        0.06 MiB       0.02 MiB
extra-staging/python-feedparser  6.0.11-2.1       0.59 MiB               
extra-staging/python-html2text   2024.2.26-2.0    0.13 MiB       0.04 MiB

Total Download Size:   0.06 MiB
Total Installed Size:  0.78 MiB

:: Proceed with installation? [Y/n] 
:: Retrieving packages...
 python-html2text-2024.2.26-2.0-any downloading...
 python-sgmllib3k-1.0.0-7.0-any downloading...
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-html2text...
installing python-sgmllib3k...
installing python-feedparser...
Optional dependencies for python-feedparser
    python-chardet: for character encoding auto-detection
    python-cchardet: for faster character encoding auto-detection
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Package (7)                             New Version  Net Change

extra-testing/python-fastjsonschema     2.20.0-1.0     0.27 MiB
extra-testing/python-lark-parser        1.2.2-1.0      1.22 MiB
extra-staging/python-pyproject-hooks    1.2.0-3.1      0.10 MiB
extra-staging/python-typing_extensions  4.12.2-1.0     0.41 MiB
extra-staging/python-build              1.2.2-3.1      0.20 MiB
extra-staging/python-installer          0.7.0-10.0     0.17 MiB
extra-staging/python-poetry-core        1.9.0-5.1      1.26 MiB

Total Installed Size:  3.63 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-pyproject-hooks...
installing python-build...
installing python-installer...
installing python-fastjsonschema...
installing python-typing_extensions...
installing python-lark-parser...
Optional dependencies for python-lark-parser
    python-atomicwrites: for atomic_cache
    python-regex: for regex support
    python-js2py: for nearley support
installing python-poetry-core...
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Retrieving sources...
  -> Found rss2email-3.14.tar.gz
  -> Found 0001-Use-poetry-core-as-build-backend.patch
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Extracting rss2email-3.14.tar.gz with bsdtar
==> Starting prepare()...
patching file pyproject.toml
==> Starting build()...
* Building wheel...

Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/pyproject_hooks/_impl.py", line 402, in _call_hook
    raise BackendUnavailable(
    ...<4 lines>...
    )
pyproject_hooks._impl.BackendUnavailable: Cannot import 'poetry.core.masonry.api'

ERROR Backend 'poetry.core.masonry.api' is not available.
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /var/lib/archbuild/extra-staging-pentium4/build/build
used straw: :mirrored_source_by_hash:
build@euronuc.lan