Using Docker executor with image buildstream/testsuite-fedora:27-master-123-7ce6581b ...
Pulling docker image buildstream/testsuite-fedora:27-master-123-7ce6581b ...
Using docker image sha256:3bebe4fab6f99ef4319395d2f0dabc1673cab8166c2da66fa335f38bfe87be79 for buildstream/testsuite-fedora:27-master-123-7ce6581b ...
section_start:1544098231:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1544097858-7821d320...
section_end:1544098232:prepare_script
section_start:1544098232:get_sources
Cloning repository...
Cloning into '/builds/BuildStream/buildstream'...
Checking out 94be4403 as valentindavid/overnight_build_arch...
fatal: reference is not a tree: 94be4403b36e20ebb66ca54ab7d49c4b085f0ba8
section_end:1544098239:get_sources
section_start:1544098239:upload_artifacts_on_failure
section_end:1544098240:upload_artifacts_on_failure
ERROR: Job failed: exit code 1