Waiting for services to be up and running...
Pulling docker image docker:stable ...
Using docker image sha256:fd7e073eb60f300c2e6c7e4035e23fff313c3a72f73c704a52095f0db736e62e for docker:stable ...
section_start:1540294762:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1540294249-868212e6...
section_end:1540294763:prepare_script
section_start:1540294763:get_sources
Cloning repository...
Cloning into '/builds/BuildStream/buildstream'...
Checking out e0b99945 as chandan/source-checkout...
fatal: reference is not a tree: e0b99945e2bc2696312631f60bc1060ce0492e86
section_end:1540294769:get_sources
section_start:1540294769:upload_artifacts_on_failure
section_end:1540294770:upload_artifacts_on_failure
ERROR: Job failed: exit code 1