[INFO] cloning repository https://github.com/johshoff/minimal_glium
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johshoff/minimal_glium" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohshoff%2Fminimal_glium", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohshoff%2Fminimal_glium'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 673691f9b57b3b8d6e7b2275eca68223b619df35
[INFO] checking johshoff/minimal_glium against master#419b3e2d3e350822550eee0e82eeded4d324d584 for pr-135536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohshoff%2Fminimal_glium" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'refs/heads/master': unable to create directory for '/workspace/builds/worker-7-tc1/source/.git/logs/refs/heads/master': No such file or directory


failed to checkout https://github.com/johshoff/minimal_glium

Caused by:
    command failed: exit status: 128