Running with gitlab-runner 16.9.1 (782c6ecb)
  on emba-docker-runner 2oEDrUT7, system ID: s_d7b5974cddbd
section_start:1710590616:prepare_executor
Preparing the "docker" executor
Using Docker executor with image docker:19.03.12 ...
Pulling docker image docker:19.03.12 ...
Using docker image sha256:81f5749c9058a7284e6acd8e126f2b882765a17b9ead14422b51cde1a110b85c for docker:19.03.12 with digest docker@sha256:d41efe7ad0df5a709cfd4e627c7e45104f39bbc08b1b40d7fb718c562b3ce135 ...
section_end:1710590642:prepare_executor
section_start:1710590642:prepare_script
Preparing environment
Running on runner-2oedrut7-project-1-concurrent-0 via emba.gnu.org...
section_end:1710590660:prepare_script
section_start:1710590660:get_sources
Getting source from Git repository
$ git config --global http.proxy $HTTP_PROXY; git config --global https.proxy $HTTPS_PROXY
Fetching changes with git depth set to 50...
Reinitialized existing Git repository in /builds/emacs/emacs/.git/
fatal: Unable to create '/builds/emacs/emacs/.git/shallow.lock': File exists.

Another git process seems to be running in this repository, e.g.
an editor opened by 'git commit'. Please make sure all processes
are terminated then try again. If it still fails, a git process
may have crashed in this repository earlier:
remove the file manually to continue.
section_end:1710590665:get_sources
section_start:1710590665:cleanup_file_variables
Cleaning up project directory and file based variables
section_end:1710590669:cleanup_file_variables
ERROR: Job failed: exit code 1