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:1544628233:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1544627708-49a60cd2...
section_end:1544628235:prepare_script
section_start:1544628235:get_sources
Cloning repository...
Cloning into '/builds/BuildStream/buildstream'...
Checking out 22b9268b as bschubert/fix-unbound-variable-exception...
fatal: reference is not a tree: 22b9268bb9efdc133ba5abb615f47b0ff76db2ce
section_end:1544628241:get_sources
section_start:1544628241:upload_artifacts_on_failure
section_end:1544628243:upload_artifacts_on_failure
ERROR: Job failed: exit code 1