Serialise publishes to avoid concurrent-rsync failures

[StanFromIreland]

This fixes https://python-software-foundation.sentry.io/issues/7209728782/?query=is%3Aunresolved&referrer=issue-stream.

[hugovk]

For reference, the error from Sentry:

Run: 'rsync -a --delete-delay --filter 'P archives/' /srv/docsbuild/cpython-only-html/Doc/build/html/ /srv/docs.python.org/3.15' KO:

Issue ID: 7209728782
Project: python-docs
Date: 29/06/2026, 09:45:00

Message

Run: 'rsync -a --delete-delay --filter 'P archives/' /srv/docsbuild/cpython-only-html/Doc/build/html/ /srv/docs.python.org/3.15' KO:
file has vanished: "/srv/docs.python.org/3.15/.genindex-Q.html.1Um04T"
rsync warning: some files vanished before they could be transferred (code 24) at main.c(1356) [sender=3.2.7]

Tags

• environment: production
• interface_type: contexts
• language: en
• level: error
• logger: root
• runtime: CPython 3.13.2
• runtime.name: CPython
• server_name: docs
• version: 3.15

Breadcrumbs

• subprocess subprocess [info]
  /srv/docsbuild/venv-3.15/bin/python3.13 -m ensurepip --upgrade --default-pip
  {"subprocess.cwd":"/srv/docsbuild/venv-3.15","thread.id":"135275563532416","thread.name":"MainThread"}
• subprocess subprocess [info]
  /srv/docsbuild/venv-3.15/bin/python -m pip install --upgrade --upgrade-strategy=eager python-docs-theme -rrequirements.txt jieba PyStemmer~=2.2.0 matplotlib>=3
  {"subprocess.cwd":"PosixPath('/srv/docsbuild/cpython-only-html/Doc')","thread.id":"135275563532416","thread.name":"MainThread"}
• subprocess subprocess [info]
  /srv/docsbuild/venv-3.15/bin/python -m pip freeze --all
  {"thread.id":"135275563532416","thread.name":"MainThread"}
• log root [info]
  Build start.
  {"asctime":"2026-06-29 06:41:05,325"}
• log root [info]
  Running make autobuild-dev-html
  {"asctime":"2026-06-29 06:41:05,325"}
• subprocess subprocess [info]
  make -C /srv/docsbuild/cpython-only-html/Doc PYTHON=/srv/docsbuild/venv-3.15/bin/python SPHINXBUILD=/srv/docsbuild/venv-3.15/bin/sphinx-build BLURB=/srv/docsbuild/venv-3.15/bin/blurb VENVDIR=/srv/docsbuild/venv-3.15 SPHINXOPTS=-D latex_engine=xelatex -D latex_elements.inputenc= -D latex_elements.fontenc= -t create-social-cards -D ogp_site_url=https://docs.python.org/3.15/ SPHINXERRORHANDLING= autobuild-dev-html
  {"thread.id":"135275563532416","thread.name":"MainThread"}
• log root [info]
  Build done (3m 51s).
  {"asctime":"2026-06-29 06:44:56,242"}
• log root [info]
  Publishing start.
  {"asctime":"2026-06-29 06:44:56,242"}
• log root [info]
  Copying HTML files to /srv/docs.python.org/3.15
  {"asctime":"2026-06-29 06:44:59,304"}
• subprocess subprocess [info]
  rsync -a --delete-delay --filter P archives/ /srv/docsbuild/cpython-only-html/Doc/build/html/ /srv/docs.python.org/3.15
  {"thread.id":"135275563532416","thread.name":"MainThread"}