Using Docker executor with image buildstream/testsuite-debian:9-master-119-552f5fc6 ...
Pulling docker image buildstream/testsuite-debian:9-master-119-552f5fc6 ...
Using docker image sha256:204e971f7c922a7cf2d183979221c59d19f17118495872d2b8274b42fdaa9fd9 for buildstream/testsuite-debian:9-master-119-552f5fc6 ...
section_start:1542621188:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1542620841-1409abbe...
section_end:1542621190:prepare_script
section_start:1542621190:get_sources
Fetching changes...
HEAD is now at 27932739 plugins/sources/pip.py: also look for python version named "python"
Checking out f067397b as phil/source-checkout-options...
fatal: reference is not a tree: f067397bd2560ae62be99254cdde8315c3e636ac
section_end:1542621191:get_sources
section_start:1542621191:upload_artifacts_on_failure
section_end:1542621193:upload_artifacts_on_failure
ERROR: Job failed: exit code 1