Waiting for services to be up and running...
Pulling docker image docker:stable ...
Using docker image sha256:062267097b77e3ecf374b437e93fefe2bbb2897da989f930e4750752ddfc822a for docker:stable ...
section_start:1543929486:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1543929126-cf833b09...
section_end:1543929488:prepare_script
section_start:1543929488:get_sources
Cloning repository...
Cloning into '/builds/BuildStream/buildstream'...
Checking out 62ae00a8 as valentindavid/git_describe_tracking...
fatal: reference is not a tree: 62ae00a88e8719d1adf2f4d0fddabf08f45734cd
section_end:1543929494:get_sources
section_start:1543929494:upload_artifacts_on_failure
section_end:1543929496:upload_artifacts_on_failure
ERROR: Job failed: exit code 1