[INFO] cloning repository https://github.com/klownie/Burtle-System-de-Lindenmayer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/klownie/Burtle-System-de-Lindenmayer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklownie%2FBurtle-System-de-Lindenmayer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklownie%2FBurtle-System-de-Lindenmayer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b26637d6b61272cfa7c0f1be0b57b07ceb7aff5
[INFO] checking klownie/Burtle-System-de-Lindenmayer against master#9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fklownie%2FBurtle-System-de-Lindenmayer" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-0-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/klownie/Burtle-System-de-Lindenmayer

Caused by:
    command failed: exit status: 128