Running with gitlab-runner 11.2.0 (35e8515d)
  on buildstream-bastion a334e492
Using Docker executor with image buildstream/testsuite-fedora:27-master-119-552f5fc6 ...
Pulling docker image buildstream/testsuite-fedora:27-master-119-552f5fc6 ...
Using docker image sha256:067ac6a353a130a4bf4ea3c27e11434df350212b564024cafb8561a35d3ba0d9 for buildstream/testsuite-fedora:27-master-119-552f5fc6 ...
section_start:1540920399:prepare_script
Running on runner-a334e492-project-1975139-concurrent-0 via runner-a334e492-gitlab-runner-autoscale-1540918953-713d7f27...
section_end:1540920400:prepare_script
section_start:1540920400:get_sources
Fetching changes...
Removing cache/
Removing dist/
HEAD is now at 618a6cfe Add explicit fetch flag for 'bst workspace-reset'
From https://gitlab.com/BuildStream/buildstream
 * [new branch]        adamjones/labels -> origin/adamjones/labels
 * [new branch]        chiaratolentino/fix-pip-source-regex -> origin/chiaratolentino/fix-pip-source-regex
 + 13360b81...2d298e1a tpollard/workspacebuildtree -> origin/tpollard/workspacebuildtree  (forced update)
Checking out 25228326 as adamjones/labels...
fatal: reference is not a tree: 25228326ceb5ee6ec41ae0fa5f2a3201eb938936
section_end:1540920414:get_sources
section_start:1540920414:upload_artifacts_on_failure
section_end:1540920415:upload_artifacts_on_failure
ERROR: Job failed: exit code 1