[INFO] cloning repository https://github.com/tylergdorn/tempstatsd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tylergdorn/tempstatsd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylergdorn%2Ftempstatsd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylergdorn%2Ftempstatsd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8efc2f39278d88efdf59f08e082d1c408e44d6c
[INFO] checking tylergdorn/tempstatsd against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftylergdorn%2Ftempstatsd" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update ref 'refs/heads/master': couldn't write '/workspace/builds/worker-0-tc1/source/.git/refs/heads/master.lock'


failed to checkout https://github.com/tylergdorn/tempstatsd

Caused by:
    command failed: exit status: 128