Waiting for services to be up and running...
Pulling docker image docker:stable ...
Using docker image sha256:807ae0a9bb114888a6e604c7c3edada6b4318b5c916788e7eea0971903eb3c9a for docker:stable ...
section_start:1547513864:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1547512769-8787fdc4...
section_end:1547513865:prepare_script
section_start:1547513865:get_sources
Fetching changes...
HEAD is now at d60d2e31 Merge branch 'jjardon/bst_external_0_9' into 'master'
Checking out 1c84bdbd as chandan/reqs-update-test...
fatal: reference is not a tree: 1c84bdbdba581638369dbf7f5e9a910d20adb200
section_end:1547513867:get_sources
section_start:1547513867:upload_artifacts_on_failure
section_end:1547513869:upload_artifacts_on_failure
ERROR: Job failed: exit code 1