[INFO] cloning repository https://github.com/d3zd3z/rack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/d3zd3z/rack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd3zd3z%2Frack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd3zd3z%2Frack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb45cba4a2d74a5ddc1d4c0d094ff2f56ad74b3e
[INFO] checking d3zd3z/rack against master#f2d69d5a7c04617d122facd0a7a5bdde0af928ae for pr-138363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd3zd3z%2Frack" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-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-1-tc1/source/.git/logs/refs/heads/master': No such file or directory


failed to checkout https://github.com/d3zd3z/rack

Caused by:
    command failed: exit status: 128