Running with gitlab-runner 15.0.0 (febb2a09)
  on acts-ci-4c-alma9-2.cern.ch mmM7twGG
section_start:1721223515:resolve_secrets
Resolving secrets
section_end:1721223515:resolve_secrets
section_start:1721223515:prepare_executor
Preparing the "docker" executor
Using Docker executor with image ghcr.io/acts-project/ubuntu2404:53 ...
Pulling docker image ghcr.io/acts-project/ubuntu2404:53 ...
Using docker image sha256:f2890a119c8163cf1c6803f1da259cff549ea83c046a13351e3713f39af9db39 for ghcr.io/acts-project/ubuntu2404:53 with digest
ghcr.io/acts-project/ubuntu2404@sha256:7a3c5a7ce63c9951d6ffb4acfe377aea7c78948e52e3254a1af1a4ffe9f16102 ...
section_end:1721223516:prepare_executor
section_start:1721223516:prepare_script
Preparing environment
Running on runner-mmm7twgg-project-132265-concurrent-0 via 540395c56b14...
section_end:1721223517:prepare_script
section_start:1721223517:get_sources
Getting source from Git repository
Fetching changes with git depth set to 20...
Reinitialized existing Git repository in /builds/acts/ci-bridge/.git/
Checking out 12b1957a as main...
Removing build/
Removing ccache/
Removing src/

Skipping Git submodules setup
section_end:1721223518:get_sources
section_start:1721223518:restore_cache
Restoring cache
Checking cache for ccache-build-linux-ubuntu-docs-linkcheck-r1-1-protected...
WARNING: file does not exist                       
Failed to extract cache
section_end:1721223518:restore_cache
section_start:1721223518:step_script
Executing "step_script" stage of the job script
Using docker image sha256:f2890a119c8163cf1c6803f1da259cff549ea83c046a13351e3713f39af9db39 for ghcr.io/acts-project/ubuntu2404:53 with digest
ghcr.io/acts-project/ubuntu2404@sha256:7a3c5a7ce63c9951d6ffb4acfe377aea7c78948e52e3254a1af1a4ffe9f16102 ...
$ echo $PATH
/opt/venv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
$ git clone $CLONE_URL src
Cloning into 'src'...
$ cd src
$ git checkout $HEAD_SHA
fatal: reference is not a tree: f47c75775f20f105fc3c0972a7cea747e2aee040
section_end:1721223524:step_script
section_start:1721223524:archive_cache_on_failure
Saving cache for failed job
Creating cache ccache-build-linux-ubuntu-docs-linkcheck-r1-1-protected...
WARNING: /builds/acts/ci-bridge/ccache: no matching files 
Uploading cache.zip to http://acts-ci-2-alma9.cern.ch:9000/cache/project/132265/ccache-build-linux-ubuntu-docs-linkcheck-r1-1-protected 
Created cache
section_end:1721223524:archive_cache_on_failure
section_start:1721223524:cleanup_file_variables
Cleaning up project directory and file based variables
section_end:1721223525:cleanup_file_variables
ERROR: Job failed: exit code 1