Using Docker executor with image buildstream/testsuite-debian:9-master-123-7ce6581b ...
Pulling docker image buildstream/testsuite-debian:9-master-123-7ce6581b ...
Using docker image sha256:38f4a396dc81ff4b1d932443e9128db24704ff9ffba361dfa0a5b06da096a745 for buildstream/testsuite-debian:9-master-123-7ce6581b ...
section_start:1545039731:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1545039487-e1d6d26c...
section_end:1545039733:prepare_script
section_start:1545039733:get_sources
Cloning repository...
Cloning into '/builds/BuildStream/buildstream'...
Checking out 052c4c3d as valentindavid/git_shallow_fetch...
fatal: reference is not a tree: 052c4c3d4714f45577500db1a2a5ab6dbe34d1a2
section_end:1545039739:get_sources
section_start:1545039739:upload_artifacts_on_failure
section_end:1545039741:upload_artifacts_on_failure
ERROR: Job failed: exit code 1