Read the Docs build information Build id: 193550 Project: espressif-esp-idf Version: latest Commit: c1600f28d14bd168347caaec2b79324d343da242 Date: 2019-03-20T22:28:21.541414Z State: finished Success: False [rtd-command-info] start-time: 2019-03-20T22:29:09.512450Z, end-time: 2019-03-20T22:29:09.522195Z, duration: 0, exit-code: 0 git remote set-url origin https://github.com/espressif/esp-idf.git [rtd-command-info] start-time: 2019-03-20T22:29:09.584689Z, end-time: 2019-03-20T22:29:12.988358Z, duration: 3, exit-code: 0 git fetch --tags --prune --prune-tags --depth 50 From https://github.com/espressif/esp-idf d31a137f9..c1600f28d master -> origin/master 5fb9aaa37..c1e5f01d2 release/v3.1 -> origin/release/v3.1 be8f34065..6505f82a8 release/v3.3 -> origin/release/v3.3 Fetching submodule components/bt/lib From https://github.com/espressif/esp32-bt-lib 2495483..11e752e master -> origin/master f719d5e..caa3059 release/v3.1 -> origin/release/v3.1 fbc8607..6c3379d release/v3.2 -> origin/release/v3.2 [rtd-command-info] start-time: 2019-03-20T22:29:13.251182Z, end-time: 2019-03-20T22:29:13.835630Z, duration: 0, exit-code: 0 git checkout --force origin/master Previous HEAD position was d31a137f9 Merge branch 'bugfix/mesh_memory_leak' into 'master' HEAD is now at c1600f28d Merge branch 'bugfix/btdm_fix_no_adv_report_when_scaning_with_sleep_enable' into 'master' [rtd-command-info] start-time: 2019-03-20T22:29:13.897732Z, end-time: 2019-03-20T22:29:13.930086Z, duration: 0, exit-code: 0 git clean -d -f -f [rtd-command-info] start-time: 2019-03-20T22:29:14.192026Z, end-time: 2019-03-20T22:29:14.286345Z, duration: 0, exit-code: 0 git submodule sync Synchronizing submodule url for 'components/asio/asio' Synchronizing submodule url for 'components/aws_iot/aws-iot-device-sdk-embedded-C' Synchronizing submodule url for 'components/bt/lib' Synchronizing submodule url for 'components/coap/libcoap' Synchronizing submodule url for 'components/esp32/lib' Synchronizing submodule url for 'components/esptool_py/esptool' Synchronizing submodule url for 'components/expat/expat' Synchronizing submodule url for 'components/json/cJSON' Synchronizing submodule url for 'components/libsodium/libsodium' Synchronizing submodule url for 'components/lwip/lwip' Synchronizing submodule url for 'components/mbedtls/mbedtls' Synchronizing submodule url for 'components/micro-ecc/micro-ecc' Synchronizing submodule url for 'components/mqtt/esp-mqtt' Synchronizing submodule url for 'components/nghttp/nghttp2' Synchronizing submodule url for 'components/protobuf-c/protobuf-c' Synchronizing submodule url for 'components/spiffs/spiffs' Synchronizing submodule url for 'components/unity/unity' Synchronizing submodule url for 'examples/build_system/cmake/import_lib/main/lib/tinyxml2' [rtd-command-info] start-time: 2019-03-20T22:29:14.349559Z, end-time: 2019-03-20T22:29:18.335917Z, duration: 3, exit-code: 0 git submodule update --init --force --recursive components/esp32/lib components/esptool_py/esptool components/bt/lib components/micro-ecc/micro-ecc components/coap/libcoap components/aws_iot/aws-iot-device-sdk-embedded-C components/nghttp/nghttp2 components/libsodium/libsodium components/spiffs/spiffs components/json/cJSON components/mbedtls/mbedtls components/asio/asio components/expat/expat components/lwip/lwip components/mqtt/esp-mqtt components/protobuf-c/protobuf-c components/unity/unity examples/build_system/cmake/import_lib/main/lib/tinyxml2 Submodule path 'components/asio/asio': checked out '55efc179b76139c8f9b44bf22a4aba4803f7a7bd' Submodule path 'components/aws_iot/aws-iot-device-sdk-embedded-C': checked out '299183238ffe7a3e6a5ca0af9db19c10eaca62cf' Submodule path 'components/bt/lib': checked out '11e752e89e9c2c631526bcf89d389f51e2daeca6' Submodule path 'components/coap/libcoap': checked out '6468887a12666f88b8704d797fc176cd4f40ee4c' Submodule path 'components/esp32/lib': checked out 'b272ad1e333689eb6985efe4e26774bb953ecce1' Submodule path 'components/esptool_py/esptool': checked out '40258ed6de78672ef20862fea24fbdf4a9b38413' Submodule path 'components/expat/expat': checked out '968b8cc46dbee47b83318d5f31a8e7907199614b' Submodule path 'components/json/cJSON': checked out '7cc52f60356909b3dd260304c7c50c0693699353' Submodule path 'components/libsodium/libsodium': checked out '70170c28c844a4786e75efc626e1aeebc93caebc' Submodule path 'components/lwip/lwip': checked out 'fe9a58cb7abdc74e7a2196b7c4e0a29ff9042f88' Submodule path 'components/mbedtls/mbedtls': checked out '19eb57f7f7b2f4312d497ddbcb5f104fc6877c70' Submodule path 'components/micro-ecc/micro-ecc': checked out 'd037ec89546fad14b5c4d5456c2e23a71e554966' Submodule path 'components/mqtt/esp-mqtt': checked out 'f08f3b678717865234637164a29ed3a63e756ca7' Submodule path 'components/nghttp/nghttp2': checked out '3bcc416e13cc790e2fb45fcfe9111d38609c5032' Submodule path 'components/nghttp/nghttp2/third-party/mruby': checked out '22464fe5a0a10f2b077eaba109ce1e912e4a77de' Submodule path 'components/nghttp/nghttp2/third-party/neverbleed': checked out 'da5c2ab419a3bb8a4cc6c37a6c7f3e4bd4b41134' Submodule path 'components/protobuf-c/protobuf-c': checked out 'dac1a65feac4ad72f612aab99f487056fbcf5c1a' Submodule path 'components/spiffs/spiffs': checked out 'f5e26c4e933189593a71c6b82cda381a7b21e41c' Submodule path 'components/unity/unity': checked out '7d2bf62b7e6afaf38153041a9d53c21aeeca9a25' Submodule path 'examples/build_system/cmake/import_lib/main/lib/tinyxml2': checked out '7e8e249990ec491ec15990cf95b6d871a66cf64a' [rtd-command-info] start-time: 2019-03-20T22:29:18.934075Z, end-time: 2019-03-20T22:29:21.850233Z, duration: 2, exit-code: 0 python2.7 -mvirtualenv --no-site-packages --no-download New python executable in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/bin/python2.7 Not overwriting existing python script /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/bin/python (you must use /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/bin/python2.7) Installing setuptools, pip, wheel... done. [rtd-command-info] start-time: 2019-03-20T22:29:21.912450Z, end-time: 2019-03-20T22:29:22.571109Z, duration: 0, exit-code: 0 python -m pip install --upgrade --cache-dir /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/.cache/pip pip Requirement already up-to-date: pip in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (19.0.3) [rtd-command-info] start-time: 2019-03-20T22:29:22.630360Z, end-time: 2019-03-20T22:29:24.871989Z, duration: 2, exit-code: 0 python -m pip install --upgrade --cache-dir /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/.cache/pip Pygments==2.2.0 setuptools<40 docutils==0.13.1 mock==1.0.1 pillow==2.6.1 alabaster>=0.7,<0.8,!=0.7.5 commonmark==0.5.4 recommonmark==0.4.0 sphinx<1.8 sphinx-rtd-theme<0.5 readthedocs-sphinx-ext<0.6 Requirement already up-to-date: Pygments==2.2.0 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (2.2.0) Collecting setuptools<40 Using cached https://files.pythonhosted.org/packages/7f/e1/820d941153923aac1d49d7fc37e17b6e73bfbd2904959fffbad77900cf92/setuptools-39.2.0-py2.py3-none-any.whl Requirement already up-to-date: docutils==0.13.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.13.1) Requirement already up-to-date: mock==1.0.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (1.0.1) Requirement already up-to-date: pillow==2.6.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (2.6.1) Requirement already up-to-date: alabaster!=0.7.5,<0.8,>=0.7 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.7.12) Requirement already up-to-date: commonmark==0.5.4 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.5.4) Requirement already up-to-date: recommonmark==0.4.0 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.4.0) Requirement already up-to-date: sphinx<1.8 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (1.7.9) Requirement already up-to-date: sphinx-rtd-theme<0.5 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.4.3) Requirement already up-to-date: readthedocs-sphinx-ext<0.6 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (0.5.17) Requirement already satisfied, skipping upgrade: snowballstemmer>=1.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (1.2.1) Requirement already satisfied, skipping upgrade: sphinxcontrib-websupport in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (1.1.0) Requirement already satisfied, skipping upgrade: packaging in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (19.0) Requirement already satisfied, skipping upgrade: babel!=2.0,>=1.3 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (2.6.0) Requirement already satisfied, skipping upgrade: requests>=2.0.0 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (2.21.0) Requirement already satisfied, skipping upgrade: Jinja2>=2.3 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (2.10) Requirement already satisfied, skipping upgrade: typing; python_version < "3.5" in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (3.6.6) Requirement already satisfied, skipping upgrade: imagesize in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (1.1.0) Requirement already satisfied, skipping upgrade: six>=1.5 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from sphinx<1.8) (1.12.0) Requirement already satisfied, skipping upgrade: pyparsing>=2.0.2 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from packaging->sphinx<1.8) (2.3.1) Requirement already satisfied, skipping upgrade: pytz>=0a in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from babel!=2.0,>=1.3->sphinx<1.8) (2018.9) Requirement already satisfied, skipping upgrade: urllib3<1.25,>=1.21.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx<1.8) (1.24.1) Requirement already satisfied, skipping upgrade: certifi>=2017.4.17 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx<1.8) (2019.3.9) Requirement already satisfied, skipping upgrade: chardet<3.1.0,>=3.0.2 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx<1.8) (3.0.4) Requirement already satisfied, skipping upgrade: idna<2.9,>=2.5 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx<1.8) (2.8) Requirement already satisfied, skipping upgrade: MarkupSafe>=0.23 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from Jinja2>=2.3->sphinx<1.8) (1.1.1) Installing collected packages: setuptools Found existing installation: setuptools 40.6.3 Uninstalling setuptools-40.6.3: Successfully uninstalled setuptools-40.6.3 Successfully installed setuptools-39.2.0 [rtd-command-info] start-time: 2019-03-20T22:29:24.932376Z, end-time: 2019-03-20T22:29:25.535963Z, duration: 0, exit-code: 0 python -m pip install --exists-action=w --cache-dir /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/.cache/pip -r docs/requirements.txt Requirement already satisfied: sphinx>=1.6.5 in 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(0.5.4) Requirement already satisfied: pyparsing>=2.0.2 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from packaging->sphinx>=1.6.5->-r docs/requirements.txt (line 4)) (2.3.1) Requirement already satisfied: pytz>=0a in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from babel!=2.0,>=1.3->sphinx>=1.6.5->-r docs/requirements.txt (line 4)) (2018.9) Requirement already satisfied: urllib3<1.25,>=1.21.1 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx>=1.6.5->-r docs/requirements.txt (line 4)) (1.24.1) Requirement already satisfied: certifi>=2017.4.17 in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from requests>=2.0.0->sphinx>=1.6.5->-r docs/requirements.txt (line 4)) (2019.3.9) Requirement already satisfied: 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/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from blockdiag>=1.5.0->sphinxcontrib-blockdiag>=1.5.3->-r docs/requirements.txt (line 7)) (2.6.1) Requirement already satisfied: funcparserlib in /home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages (from blockdiag>=1.5.0->sphinxcontrib-blockdiag>=1.5.3->-r docs/requirements.txt (line 7)) (0.3.6) [rtd-command-info] start-time: 2019-03-20T22:29:27.321377Z, end-time: 2019-03-20T22:29:27.377511Z, duration: 0, exit-code: 0 cat docs/en/conf.py # -*- coding: utf-8 -*- # # English Language RTD & Sphinx config file # # Uses ../conf_common.py for most non-language-specific settings. # Importing conf_common adds all the non-language-specific # parts to this conf module import sys import os sys.path.insert(0, os.path.abspath('..')) from conf_common import * # noqa: F401, F403 - need to make available everything from common # General information about the project. project = u'ESP-IDF Programming Guide' copyright = u'2016 - 2019, Espressif Systems (Shanghai) CO., LTD' # The language for content autogenerated by Sphinx. Refer to documentation # for a list of supported languages. language = 'en' ########################################################################### # auto-created readthedocs.org specific configuration # ########################################################################### # # The following code was added during an automated build on readthedocs.org # It is auto created and injected for every build. The result is based on the # conf.py.tmpl file found in the readthedocs.org codebase: # https://github.com/rtfd/readthedocs.org/blob/master/readthedocs/doc_builder/templates/doc_builder/conf.py.tmpl # import importlib import sys import os.path from six import string_types from sphinx import version_info # Get suffix for proper linking to GitHub # This is deprecated in Sphinx 1.3+, # as each page can have its own suffix if globals().get('source_suffix', False): if isinstance(source_suffix, string_types): SUFFIX = source_suffix elif isinstance(source_suffix, (list, tuple)): # Sphinx >= 1.3 supports list/tuple to define multiple suffixes SUFFIX = source_suffix[0] elif isinstance(source_suffix, dict): # Sphinx >= 1.8 supports a mapping dictionary for mulitple suffixes SUFFIX = list(source_suffix.keys())[0] # make a ``list()`` for py2/py3 compatibility else: # default to .rst SUFFIX = '.rst' else: SUFFIX = '.rst' # Add RTD Static Path. Add to the end because it overwrites previous files. if not 'html_static_path' in globals(): html_static_path = [] if os.path.exists('_static'): html_static_path.append('_static') # Add RTD Theme only if they aren't overriding it already using_rtd_theme = ( ( 'html_theme' in globals() and html_theme in ['default'] and # Allow people to bail with a hack of having an html_style 'html_style' not in globals() ) or 'html_theme' not in globals() ) if using_rtd_theme: theme = importlib.import_module('sphinx_rtd_theme') html_theme = 'sphinx_rtd_theme' html_style = None html_theme_options = {} if 'html_theme_path' in globals(): html_theme_path.append(theme.get_html_theme_path()) else: html_theme_path = [theme.get_html_theme_path()] if globals().get('websupport2_base_url', False): websupport2_base_url = 'https://readthedocs.com/websupport' websupport2_static_url = 'https://media.readthedocs.com/' #Add project information to the template context. context = { 'using_theme': using_rtd_theme, 'html_theme': html_theme, 'current_version': "latest", 'version_slug': "latest", 'MEDIA_URL': "https://media.readthedocs.com/media/", 'STATIC_URL': "https://media.readthedocs.com/", 'PRODUCTION_DOMAIN': "readthedocs.com", 'versions': [ ("latest", "/en/latest/"), ("stable", "/en/stable/"), ("v3.2-beta3", "/en/v3.2-beta3/"), ("v3.1.3", "/en/v3.1.3/"), ("v3.1.2", "/en/v3.1.2/"), ("v3.1.1", "/en/v3.1.1/"), ("v3.1", "/en/v3.1/"), ("v3.1-rc2", "/en/v3.1-rc2/"), ("v3.1-rc1", "/en/v3.1-rc1/"), ("v3.0.7", "/en/v3.0.7/"), ("v3.0.6", "/en/v3.0.6/"), ("v3.0.5", "/en/v3.0.5/"), ("v3.0.4", "/en/v3.0.4/"), ("v3.0.3", "/en/v3.0.3/"), ("v3.0.2", "/en/v3.0.2/"), ("v3.0.1", "/en/v3.0.1/"), ("v3.0", "/en/v3.0/"), ("v2.1.1", "/en/v2.1.1/"), ("v2.1", "/en/v2.1/"), ("v2.0", "/en/v2.0/"), ], 'downloads': [ ("pdf", "//readthedocs.com/projects/espressif-esp-idf/downloads/pdf/latest/"), ("htmlzip", "//readthedocs.com/projects/espressif-esp-idf/downloads/htmlzip/latest/"), ], 'subprojects': [ ], 'slug': 'espressif-esp-idf', 'name': u'esp-idf', 'rtd_language': u'en', 'programming_language': u'c', 'canonical_url': 'https://docs.espressif.com/projects/esp-idf/en/latest/', 'analytics_code': 'UA-132861133-1', 'single_version': False, 'conf_py_path': '/docs/en/', 'api_host': 'https://readthedocs.com', 'github_user': 'espressif', 'github_repo': 'esp-idf', 'github_version': 'master', 'display_github': True, 'bitbucket_user': 'None', 'bitbucket_repo': 'None', 'bitbucket_version': 'master', 'display_bitbucket': False, 'gitlab_user': 'None', 'gitlab_repo': 'None', 'gitlab_version': 'master', 'display_gitlab': False, 'READTHEDOCS': True, 'using_theme': (html_theme == "default"), 'new_theme': (html_theme == "sphinx_rtd_theme"), 'source_suffix': SUFFIX, 'ad_free': False, 'user_analytics_code': 'UA-132861133-1', 'global_analytics_code': 'UA-17997319-2', 'commit': 'c1600f28', } if 'html_context' in globals(): html_context.update(context) else: html_context = context # Add custom RTD extension if 'extensions' in globals(): # Insert at the beginning because it can interfere # with other extensions. # See https://github.com/rtfd/readthedocs.org/pull/4054 extensions.insert(0, "readthedocs_ext.readthedocs") else: extensions = ["readthedocs_ext.readthedocs"] [rtd-command-info] start-time: 2019-03-20T22:29:27.442001Z, end-time: 2019-03-20T22:29:51.858076Z, duration: 24, exit-code: 2 python sphinx-build -T -E -b readthedocs -d _build/doctrees-readthedocs -D language=en . _build/html Running Sphinx v1.7.9 Getting Doxyfile's INPUT Generating 'api_name.inc' files with Doxygen directives ../../Kconfig:15: warning: 'option env="IDF_TARGET"' on symbol IDF_TARGET_ENV has no effect, because the environment variable IDF_TARGET is not set Calling Doxygen to generate latest XML files Generating kconfig.inc from kconfig contents List of Kconfig: app_trace, aws_iot, bt, driver, efuse, esp32, esp_adc_cal, esp_event, esp_http_client, esp_http_server, esp_https_ota, espcoredump, ethernet, fatfs, freemodbus, freertos, heap, libsodium, log, lwip, mbedtls, mdns, mqtt, nvs_flash, openssl, pthread, spi_flash, spiffs, tcpip_adapter, unity, vfs, wear_levelling List of Kconfig.projbuild: app_update, bootloader, esptool_py, partition_table Generating toolchain download links Version: v4.0-dev-110-gc1600f28d Release: v4.0-dev-110-gc1600f28d loading translations [en]... done Traceback (most recent call last): File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/sphinx/cmdline.py", line 303, in main args.warningiserror, args.tags, args.verbosity, args.jobs) File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/sphinx/application.py", line 191, in __init__ self.setup_extension(extension) File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/sphinx/application.py", line 411, in setup_extension self.registry.load_extension(self, extname) File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/sphinx/registry.py", line 326, in load_extension metadata = mod.setup(app) File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/__init__.py", line 13, in setup from . import directives File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/directives.py", line 4, in from .renderer import DoxygenToRstRendererFactory File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/renderer/__init__.py", line 5, in from . import sphinxrenderer File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/renderer/sphinxrenderer.py", line 67, in class DomainDirectiveFactory(object): File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/renderer/sphinxrenderer.py", line 80, in DomainDirectiveFactory 'union': (cpp.CPPUnionObject, 'union'), AttributeError: 'module' object has no attribute 'CPPUnionObject' Exception occurred: File "/home/docs/checkouts/readthedocs.org/user_builds/espressif-esp-idf/envs/latest/lib/python2.7/site-packages/breathe/renderer/sphinxrenderer.py", line 80, in DomainDirectiveFactory 'union': (cpp.CPPUnionObject, 'union'), AttributeError: 'module' object has no attribute 'CPPUnionObject' The full traceback has been saved in /tmp/sphinx-err-HsZRLP.log, if you want to report the issue to the developers. Please also report this if it was a user error, so that a better error message can be provided next time. A bug report can be filed in the tracker at . Thanks!