Jobs on my self-hosted GitLab deployment recently started failing sometimes with this git error:
An example of a full job log is:
Running with gitlab-runner 13.12.0 (v13.12.0)
on ....50ab V...
Preparing the "shell" executor
00:00
Using Shell executor...
Preparing environment
00:00
Running on saxtons...
Getting source from Git repository
00:03
$ /nix/store/s0frm5z2k43qm66q39ifl2vz96hmyxg4-pre-clone
Fetching changes with git depth set to 50...
Reinitialized existing Git repository in /var/lib/private/gitlab-runner/builds/V.../2/privatestorage/PrivateStorageio/.git/
fatal: shallow file has changed since we read it
Cleaning up file based variables
00:00
ERROR: Job failed: exit status 1
The pre-clone script contains this and is used to fix permissions on unwriteable directories that cause the runner's attempts to clean up the git checkout to fail:
chmod --recursive u+rwX .
The GitLab-runner's config.toml contains this:
check_interval = 0
concurrent = 8
[[runners]]
executor = "shell"
name = "...50ab"
pre_clone_script = "/nix/store/s0frm5z2k43qm66q39ifl2vz96hmyxg4-pre-clone"
token = "V..."
url = "https://.../"
[runners.cache]
[runners.cache.azure]
[runners.cache.gcs]
[runners.cache.s3]
[runners.custom_build_dir]
[[runners]]
executor = "docker"
name = "...5afc"
token = "..."
url = "https://.../"
[runners.cache]
[runners.cache.azure]
[runners.cache.gcs]
[runners.cache.s3]
[runners.custom_build_dir]
[runners.docker]
disable_cache = false
disable_entrypoint_overwrite = false
image = "nixos/nix"
oom_kill_disable = false
privileged = false
shm_size = 0
tls_verify = false
volumes = ["/cache"]
[[runners]]
executor = "docker"
name = "...c334"
token = "..."
url = "https://.../"
[runners.cache]
[runners.cache.azure]
[runners.cache.gcs]
[runners.cache.s3]
[runners.custom_build_dir]
[runners.docker]
disable_cache = false
disable_entrypoint_overwrite = false
image = ".../ubuntu-python3-awscli"
oom_kill_disable = false
privileged = false
shm_size = 0
tls_verify = false
volumes = ["/cache"]
[session_server]
session_timeout = 1800
GitLab-runner is deployed on NixOS 21.05 (using the NixOS package/service configuration).
I've never seen this git error before.
- What does it indicate is happening?
- How do I configure GitLab to stop doing whatever causes this?