Read the Docs build information Build id: 3983412 Project: xanaduai-catalyst Version: 2784 Commit: 16f9408437b80d9f5a1817643fd352493e352708 Date: 2026-05-04T14:52:27.399841Z State: finished Success: False [rtd-command-info] start-time: 2026-05-04T14:52:28.176239Z, end-time: 2026-05-04T14:52:29.959826Z, duration: 1, exit-code: 0 git clone --depth 1 git@github.com:PennyLaneAI/catalyst.git . Cloning into '.'... Warning: Permanently added 'github.com' (ED25519) to the list of known hosts. [rtd-command-info] start-time: 2026-05-04T14:52:30.110221Z, end-time: 2026-05-04T14:52:31.954892Z, duration: 1, exit-code: 0 git fetch origin --force --prune --prune-tags --depth 50 pull/2784/head:external-2784 Warning: Permanently added 'github.com' (ED25519) to the list of known hosts. From github.com:PennyLaneAI/catalyst * [new ref] refs/pull/2784/head -> external-2784 [rtd-command-info] start-time: 2026-05-04T14:52:32.928119Z, end-time: 2026-05-04T14:52:33.061490Z, duration: 0, exit-code: 0 git checkout --force 16f9408437b80d9f5a1817643fd352493e352708 Note: switching to '16f9408437b80d9f5a1817643fd352493e352708'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by switching back to a branch. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -c with the switch command. Example: git switch -c Or undo this operation with: git switch - Turn off this advice by setting config variable advice.detachedHead to false HEAD is now at 16f9408 changelog [rtd-command-info] start-time: 2026-05-04T14:52:33.136825Z, end-time: 2026-05-04T14:52:33.176109Z, duration: 0, exit-code: 0 cat .readthedocs.yaml # Read the Docs configuration file # Required version: 2 # Build documentation with Sphinx sphinx: configuration: doc/conf.py # Exclude all submodules submodules: exclude: all # Optionally build your docs in additional formats such as PDF and ePub formats: - htmlzip # Optionally set the build image build: os: ubuntu-24.04 tools: python: "3.11" apt_packages: - graphviz - cmake - ninja-build - clang # Optionally set the version of Python and requirements required to build your docs python: install: - requirements: doc/requirements.txt - method: pip path: . [rtd-command-info] start-time: 2026-05-04T14:52:34.890900Z, end-time: 2026-05-04T14:55:31.394385Z, duration: 176, exit-code: 100 apt-get update --assume-yes --quiet Hit:1 http://archive.ubuntu.com/ubuntu noble InRelease Get:2 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB] Get:3 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB] Get:4 http://archive.ubuntu.com/ubuntu noble/main amd64 Components [665 kB] Get:5 http://archive.ubuntu.com/ubuntu noble/universe amd64 Components [5943 kB] Get:6 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB] Get:7 http://archive.ubuntu.com/ubuntu noble/multiverse amd64 Components [41.9 kB] Get:8 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [2386 kB] Get:9 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [2018 kB] Get:10 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Components [238 kB] Get:11 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [2142 kB] Get:12 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Components [532 kB] Get:13 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Packages [3788 kB] Get:14 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Components [159 B] Get:15 http://archive.ubuntu.com/ubuntu noble-updates/multiverse amd64 Packages [54.1 kB] Get:16 http://archive.ubuntu.com/ubuntu noble-updates/multiverse amd64 Components [888 B] Get:17 http://archive.ubuntu.com/ubuntu noble-backports/main amd64 Packages [77.8 kB] Get:18 http://archive.ubuntu.com/ubuntu noble-backports/main amd64 Components [6350 B] Get:19 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Packages [39.9 kB] Get:20 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Components [11.3 kB] Get:21 http://archive.ubuntu.com/ubuntu noble-backports/restricted amd64 Components [160 B] Get:22 http://archive.ubuntu.com/ubuntu noble-backports/multiverse amd64 Packages [671 B] Get:23 http://archive.ubuntu.com/ubuntu noble-backports/multiverse amd64 Components [161 B] Ign:24 http://security.ubuntu.com/ubuntu noble-security/main amd64 Components Ign:25 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages Get:26 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Components [95.1 kB] Get:27 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Packages [3566 kB] Get:28 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Components [157 B] Get:29 http://security.ubuntu.com/ubuntu noble-security/multiverse amd64 Packages [34.2 kB] Get:30 http://security.ubuntu.com/ubuntu noble-security/multiverse amd64 Components [158 B] Get:24 http://security.ubuntu.com/ubuntu noble-security/main amd64 Components [25.7 kB] Get:25 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [1499 kB] Err:25 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages File has unexpected size (1498581 != 1498580). Mirror sync in progress? [IP: 91.189.91.83 80] Hashes of expected file: - Filesize:1498580 [weak] - SHA256:f16f1cdb768514ff0098972806048bea34b15431517558c3eb5499370f2f5b16 - SHA1:4306c77f626be11c04cfe4a5d341acfa43231245 [weak] - MD5Sum:6cff392654261fd95703a90946adde9f [weak] Release file created at: Mon, 04 May 2026 12:57:33 +0000 Fetched 22.0 MB in 2min 54s (127 kB/s) Reading package lists... E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/noble-security/universe/binary-amd64/Packages.gz File has unexpected size (1498581 != 1498580). Mirror sync in progress? [IP: 91.189.91.83 80] Hashes of expected file: - Filesize:1498580 [weak] - SHA256:f16f1cdb768514ff0098972806048bea34b15431517558c3eb5499370f2f5b16 - SHA1:4306c77f626be11c04cfe4a5d341acfa43231245 [weak] - MD5Sum:6cff392654261fd95703a90946adde9f [weak] Release file created at: Mon, 04 May 2026 12:57:33 +0000 E: Some index files failed to download. They have been ignored, or old ones used instead.